Claudio Elbetti - Academia.edu (original) (raw)

Papers by Claudio Elbetti

Updates in surgery, 2014

Patients affected by high-grade haemorrhoid with a fibrous internal pile or an important external... more Patients affected by high-grade haemorrhoid with a fibrous internal pile or an important external component are suitable for an excisional procedure. The aim of this study is to evaluate the outcome of different excisional treatments such as Milligan and Morgan haemorrhoidectomy, Ferguson haemorrhoidectomy and Pexy-excision carried out according to a tailored treatment on each pathological pile. All the consecutive patients that underwent an excisional procedure for high-grade haemorrhoids in two different centres were considered for the present study. From January 2010 to December 2012, 135 patients affected by high-grade haemorrhoidal disease were treated with excisional procedures. No statistically significant differences were noted regarding age, sex distribution, symptoms, Goligher grade, length of surgery, number of pathological piles treated and number of pathological piles excised for each patient between groups. The Ferguson and Pexy-excision procedures yield better results...

Colorectal Disease, 2020

Aim: Proctology is one of the surgical specialties that has suffered the most during COVID-19 pan... more Aim: Proctology is one of the surgical specialties that has suffered the most during COVID-19 pandemic. Using a cross-sectional non-incentivised World Wide Web survey, we aimed to snapshot the current status of proctological practice in six world regions. Method: Surgeons affiliated to renowned scientific societies with an interest in coloproctology were invited to join the survey. Members of the ProctoLock Working Group enhanced recruitment by direct invitation. The predictive power of respondents' and hospitals' demographics on the change of status of surgical and outpatient activities was calculated. Results: Respondents (n = 1050) were mostly men (79%), with a mean age of 46.9 years, at consultant level (79%), practising in academic hospitals (53%) offering a dedicated proctology service (68%). A total of 119 (11%) tested positive for SARS-CoV-2. The majority (54%) came from Europe. Participants from Asia reported a higher proportion of unaltered practice (17%), while those from Europe had the highest proportion of fully stopped practice (20%). The likelihood of ongoing surgical practice was higher in men (OR 1.54, 95% CI 1.13-2.09; P = 0.006), in those reporting readily availability of personal protective equipment (PPE) (OR 1.40, 1.08-1.42; P = 0.012) and in centres that were partially or not at all involved in COVID-19 care (OR 2.95, 2.14-4.09; P < 0.001). This chance decreased by 2% per year of respondent's age (P = 0.001). Conclusion: Several factors including different screening policies and resource capacity affected the current status of proctological practice. This information may help health authorities to formulate effective preventive strategies to limit curtailment of care of these patients during the pandemic.

Frontiers in Surgery, 2021

Introduction: Surgery for chronic anal fissure is challenging for every proctologist. Solving the... more Introduction: Surgery for chronic anal fissure is challenging for every proctologist. Solving the pain by guaranteeing rapid and effective healing is the objective, but what is the price to pay today in functional terms? Though this result is nowadays partially achievable through interventions that include the execution of an internal sphincterotomy among the procedures, it is necessary to underline the high rate of patients who can present faecal incontinence. The aim of this study is to explore the effectiveness of scanner-assisted CO2 laser fissurectomy.Methods: From April 2021 to September 2021, all consecutive patients who affected by chronic anal fissure suitable for surgery, meeting the inclusion and exclusion criteria, were evaluated. All planned data were recorded before surgery, then at 24 h, 1 week, and 1 month follow-up. A scanner-assisted CO2 laser was used in this study to achieve a smooth and dried wound with a minimal tissue thermal damage, to ensure good postsurgica...

Annali italiani di chirurgia, 2017

Aim of the present paper was to evaluate the role of tailored different single pile treatment in ... more Aim of the present paper was to evaluate the role of tailored different single pile treatment in the clinical outcome of hemorrhoids. The surgical strategy considered to treat only pathological piles with different procedure according to each pathological Goligher's degree, presence of fibrous, inelastic redundant internal pile(F) and presence of external pathological pile (external pile congestion or subversion of dental line (E) and skin tag not tolerated from the patient (S)). We treated with Hemorrhoidopexy second and third degree pile without F or ES; with Hemorrhoidopexy and excision of external component every second and third degree pile with E or S and with complete semi-closed pile excision all third degree with F and IV degree piles. The number of post operative days of self administered analgesics was the primary end point and short/long term post operative complications, hospital stay, re-admission and recurrence were secondary end points. 157 patients were treated....

Annali italiani di chirurgia, 2017

AIM Aim of the present paper was to evaluate the role of tailored different single pile treatment... more AIM Aim of the present paper was to evaluate the role of tailored different single pile treatment in the clinical outcome of hemorrhoids. MATERIAL OF STUDY The surgical strategy considered to treat only pathological piles with different procedure according to each pathological Goligher's degree, presence of fibrous, inelastic redundant internal pile(F) and presence of external pathological pile (external pile congestion or subversion of dental line (E) and skin tag not tolerated from the patient (S)). We treated with Hemorrhoidopexy second and third degree pile without F or ES; with Hemorrhoidopexy and excision of external component every second and third degree pile with E or S and with complete semi-closed pile excision all third degree with F and IV degree piles. The number of post operative days of self administered analgesics was the primary end point and short/long term post operative complications, hospital stay, re-admission and recurrence were secondary end points. RESU...

Updates in Surgery

Proctology is one of the surgical specialties that suffered the most during COVID-19 pandemic. Us... more Proctology is one of the surgical specialties that suffered the most during COVID-19 pandemic. Using data from a crosssectional worldwide web survey, we aimed to snapshot the current status of proctologic practice in Italy with differences between three macro areas (North, Centre, South). Specialists affiliated to renowned scientific societies with an interest in coloproctology were invited to join a 27-item survey. Predictive power of respondents' and hospitals' demographics on the change of status of surgical activities was calculated. The study was registered at ClinicalTrials.gov (NCT 04392245). Of 299 respondents from Italy, 94 (40%) practiced in the North, 60 (25%) in the Centrer and 82 (35%) in the South and Islands. The majority were men (79%), at consultant level (70%), with a mean age of 46.5 years, practicing in academic hospitals (39%), where a dedicated proctologist was readily available (68%). Southern respondents were more at risk of infection compared to those from the Center (OR, 3.30; 95%CI 1.46; 7.47, P = 0.004), as were males (OR, 2.64; 95%CI 1.09; 6.37, P = 0.031) and those who routinely tested patients prior to surgery (OR, 3.02; 95%CI 1.39; 6.53, P = 0.005). The likelihood of ongoing surgical practice was higher in the South (OR 1.36, 95%CI 0.75; 2.46, P = 0.304) and in centers that were not fully dedicated to COVID-19 care (OR 4.00, 95%CI 1.88; 8.50, P < 0.001). The results of this survey highlight important factors contributing to the deadlock of proctologic practice in Italy and may inform the development of future management strategies.

Diseases of the Colon Rectum, 2002

The existence of an anatomic and functional separation between the puborectalis muscle and extern... more The existence of an anatomic and functional separation between the puborectalis muscle and external anal sphincter permits the performance of an abdominoendoanal excision, instead of an abdominoperineal excision, of the rectum and levator muscles, with preservation of a functioning external sphincter, in selected patients with very low rectal cancer and limited infiltration of the levator muscles. Seven patients (4 females; age, 48-69; mean, 60.7 +/- 7.8 years) with low posterior or posterolateral localized rectal cancers with infiltration of the puborectalis muscle (T4) were submitted to preoperative chemoradiation and excision of the rectum with the levator muscles, while the external sphincter and its innervation were preserved. A coloanal anastomosis was performed at the dentate line. At a median follow-up of 58 (range, 42-102) months, 6 patients (86 percent) were alive and disease free. No local recurrence was observed. Anorectal function, at three years from surgery was no worse than that of six patients of the same age and gender who had undergone more conventional coloanal anastomoses with preservation of the levator muscles. Selected patients with very low rectal cancers infiltrating the levator muscles (T4) and responding to preoperative chemoradiation therapy can still be treated with an advanced sphincter-sparing procedure, instead of an abdominoperineal excision. Oncologic and functional results seem to be satisfactory.

World Journal of Surgery, Mar 1, 2010

Background Preoperative chemoradiation followed by total mesorectal excision (TME) has become a s... more Background Preoperative chemoradiation followed by total mesorectal excision (TME) has become a standard treatment of preoperatively staged T3 low rectal cancers in many institutions; however, a direct comparison of generalized preoperative versus selective adjuvant chemoradiation has never been assessed in a clinical practice setting. Patients Over a 4-year period, 80 patients with T3 primary low adenocarcinoma of the rectum, judged operable at preoperative staging, were offered preoperative chemoradiation. Forty-seven patients (Group I) accepted the neoadjuvant treatment and 33 (Group II) preferred immediate surgery and postoperative chemoradiation if indicated. Results Major postoperative complications occurred in 21% of Group I versus in 11% of Group II (p = 0.3) patients. After a mean follow-up of 92 months, the local recurrence rate was 4 and 9% (p = 0.4), metastasis rate was 30 and 24% (p = 0.5), 5-year survival probability was 0.79 (95% CI = 0.49-0.92) and 0.82 (95% CI = 0.70-1.00) (log-rank test, p = 0.6) for Group I and Group II, respectively. Conclusions In T3 operable low rectal cancers, selective postoperative radiochemotherapy yielded similar long-term results regarding recurrence rate and survival as extended preoperative chemoradiation.

World Journal of Surgery, 2010

Background Preoperative chemoradiation followed by total mesorectal excision (TME) has become a s... more Background Preoperative chemoradiation followed by total mesorectal excision (TME) has become a standard treatment of preoperatively staged T3 low rectal cancers in many institutions; however, a direct comparison of generalized preoperative versus selective adjuvant chemoradiation has never been assessed in a clinical practice setting. Patients Over a 4-year period, 80 patients with T3 primary low adenocarcinoma of the rectum, judged operable at preoperative staging, were offered preoperative chemoradiation. Forty-seven patients (Group I) accepted the neoadjuvant treatment and 33 (Group II) preferred immediate surgery and postoperative chemoradiation if indicated. Results Major postoperative complications occurred in 21% of Group I versus in 11% of Group II (p = 0.3) patients. After a mean follow-up of 92 months, the local recurrence rate was 4 and 9% (p = 0.4), metastasis rate was 30 and 24% (p = 0.5), 5-year survival probability was 0.79 (95% CI = 0.49-0.92) and 0.82 (95% CI = 0.70-1.00) (log-rank test, p = 0.6) for Group I and Group II, respectively. Conclusions In T3 operable low rectal cancers, selective postoperative radiochemotherapy yielded similar long-term results regarding recurrence rate and survival as extended preoperative chemoradiation.

Diseases of the Colon & Rectum, 1999

PURPOSE: The possible existence of an anatomic and functional separation between the external sph... more PURPOSE: The possible existence of an anatomic and functional separation between the external sphincter and the puborectatis muscle has been reported in the medical literature. In this article we confirm, by means of anatomic and clinical observations, the presence of such a separation, focusing on its importance in understanding the pathway of diffusion for some suppurative anal lesions and to plan advanced sphincter-sparing procedures.

Diseases of the Colon & Rectum, 2001

The purpose of this study was to use electromyography to examine the behavior of the external sph... more The purpose of this study was to use electromyography to examine the behavior of the external sphincter, puborectalis muscle, and pubococcygeus muscle during attempted defecation in patients with symptoms of obstructed defecation and in normal subjects to highlight differences of clinical significance. A total of 35 patients (31 females) aged 20 to 80 (mean, 53.7 +/- 13.3) years with unprepared bowel who had normal colon transit time and obstructed defecation symptoms and 12 voluntary control subjects (7 females) aged 23 to 68 (mean, 48 +/- 11.5) years underwent an electromyography evaluation of the activity of the external sphincter, puborectalis muscle, and pubococcygeus muscle during attempted defecation. The patients were also examined in separate sessions with defecography and anal manometry. During attempted defecation, puborectalis muscle and external sphincter always reacted in the same manner. When evaluated with pubococcygeus muscle, three main patterns of activity were observed either in patients or in controls: 1) coordinated activation pattern; 2) coordinated inhibition pattern; and 3) uncoordinated or equivocal pattern: activation of pubococcygeus muscle with inhibition of puborectalis muscle/external sphincter, activation followed by inhibition of the three muscles, and activation followed by inhibition of pubococcygeus muscle and no change in the others. We never observed activation of puborectalis muscle/external sphincter concomitant with inhibition of pubococcygeus muscle. The inhibitory coordinated pattern occurred significantly (P = 0.01) more frequently in controls than in patients. These subjects also presented a significantly (P = 0.01) lower frequency of pubococcygeus muscle inhibition. Either activation or inhibition appears as a physiological behavior, possibly adopted in different circumstances, of the pelvic floor muscles during attempted defecation. The higher prevalence of coordinated inhibitory patterns in normal subjects and the lower frequency of pubococcygeus muscle inhibition in patients with symptoms of obstructed defecation, however, suggests that a loss of inhibition capacity progressing from pubococcygeus muscle to puborectalis muscle/external sphincter muscles could determine the insurgence of obstructed defecation symptoms in some subjects, who should therefore benefit from biofeedback retraining aimed at reacquisition of the inhibition capacity of all muscles of the pelvic floor during defecation.

Diseases of the Colon & Rectum, 2002

The existence of an anatomic and functional separation between the puborectalis muscle and extern... more The existence of an anatomic and functional separation between the puborectalis muscle and external anal sphincter permits the performance of an abdominoendoanal excision, instead of an abdominoperineal excision, of the rectum and levator muscles, with preservation of a functioning external sphincter, in selected patients with very low rectal cancer and limited infiltration of the levator muscles. Seven patients (4 females; age, 48-69; mean, 60.7 +/- 7.8 years) with low posterior or posterolateral localized rectal cancers with infiltration of the puborectalis muscle (T4) were submitted to preoperative chemoradiation and excision of the rectum with the levator muscles, while the external sphincter and its innervation were preserved. A coloanal anastomosis was performed at the dentate line. At a median follow-up of 58 (range, 42-102) months, 6 patients (86 percent) were alive and disease free. No local recurrence was observed. Anorectal function, at three years from surgery was no worse than that of six patients of the same age and gender who had undergone more conventional coloanal anastomoses with preservation of the levator muscles. Selected patients with very low rectal cancers infiltrating the levator muscles (T4) and responding to preoperative chemoradiation therapy can still be treated with an advanced sphincter-sparing procedure, instead of an abdominoperineal excision. Oncologic and functional results seem to be satisfactory.

Updates in surgery, 2014

Patients affected by high-grade haemorrhoid with a fibrous internal pile or an important external... more Patients affected by high-grade haemorrhoid with a fibrous internal pile or an important external component are suitable for an excisional procedure. The aim of this study is to evaluate the outcome of different excisional treatments such as Milligan and Morgan haemorrhoidectomy, Ferguson haemorrhoidectomy and Pexy-excision carried out according to a tailored treatment on each pathological pile. All the consecutive patients that underwent an excisional procedure for high-grade haemorrhoids in two different centres were considered for the present study. From January 2010 to December 2012, 135 patients affected by high-grade haemorrhoidal disease were treated with excisional procedures. No statistically significant differences were noted regarding age, sex distribution, symptoms, Goligher grade, length of surgery, number of pathological piles treated and number of pathological piles excised for each patient between groups. The Ferguson and Pexy-excision procedures yield better results...

Colorectal Disease, 2020

Aim: Proctology is one of the surgical specialties that has suffered the most during COVID-19 pan... more Aim: Proctology is one of the surgical specialties that has suffered the most during COVID-19 pandemic. Using a cross-sectional non-incentivised World Wide Web survey, we aimed to snapshot the current status of proctological practice in six world regions. Method: Surgeons affiliated to renowned scientific societies with an interest in coloproctology were invited to join the survey. Members of the ProctoLock Working Group enhanced recruitment by direct invitation. The predictive power of respondents' and hospitals' demographics on the change of status of surgical and outpatient activities was calculated. Results: Respondents (n = 1050) were mostly men (79%), with a mean age of 46.9 years, at consultant level (79%), practising in academic hospitals (53%) offering a dedicated proctology service (68%). A total of 119 (11%) tested positive for SARS-CoV-2. The majority (54%) came from Europe. Participants from Asia reported a higher proportion of unaltered practice (17%), while those from Europe had the highest proportion of fully stopped practice (20%). The likelihood of ongoing surgical practice was higher in men (OR 1.54, 95% CI 1.13-2.09; P = 0.006), in those reporting readily availability of personal protective equipment (PPE) (OR 1.40, 1.08-1.42; P = 0.012) and in centres that were partially or not at all involved in COVID-19 care (OR 2.95, 2.14-4.09; P < 0.001). This chance decreased by 2% per year of respondent's age (P = 0.001). Conclusion: Several factors including different screening policies and resource capacity affected the current status of proctological practice. This information may help health authorities to formulate effective preventive strategies to limit curtailment of care of these patients during the pandemic.

Frontiers in Surgery, 2021

Introduction: Surgery for chronic anal fissure is challenging for every proctologist. Solving the... more Introduction: Surgery for chronic anal fissure is challenging for every proctologist. Solving the pain by guaranteeing rapid and effective healing is the objective, but what is the price to pay today in functional terms? Though this result is nowadays partially achievable through interventions that include the execution of an internal sphincterotomy among the procedures, it is necessary to underline the high rate of patients who can present faecal incontinence. The aim of this study is to explore the effectiveness of scanner-assisted CO2 laser fissurectomy.Methods: From April 2021 to September 2021, all consecutive patients who affected by chronic anal fissure suitable for surgery, meeting the inclusion and exclusion criteria, were evaluated. All planned data were recorded before surgery, then at 24 h, 1 week, and 1 month follow-up. A scanner-assisted CO2 laser was used in this study to achieve a smooth and dried wound with a minimal tissue thermal damage, to ensure good postsurgica...

Annali italiani di chirurgia, 2017

Aim of the present paper was to evaluate the role of tailored different single pile treatment in ... more Aim of the present paper was to evaluate the role of tailored different single pile treatment in the clinical outcome of hemorrhoids. The surgical strategy considered to treat only pathological piles with different procedure according to each pathological Goligher's degree, presence of fibrous, inelastic redundant internal pile(F) and presence of external pathological pile (external pile congestion or subversion of dental line (E) and skin tag not tolerated from the patient (S)). We treated with Hemorrhoidopexy second and third degree pile without F or ES; with Hemorrhoidopexy and excision of external component every second and third degree pile with E or S and with complete semi-closed pile excision all third degree with F and IV degree piles. The number of post operative days of self administered analgesics was the primary end point and short/long term post operative complications, hospital stay, re-admission and recurrence were secondary end points. 157 patients were treated....

Annali italiani di chirurgia, 2017

AIM Aim of the present paper was to evaluate the role of tailored different single pile treatment... more AIM Aim of the present paper was to evaluate the role of tailored different single pile treatment in the clinical outcome of hemorrhoids. MATERIAL OF STUDY The surgical strategy considered to treat only pathological piles with different procedure according to each pathological Goligher's degree, presence of fibrous, inelastic redundant internal pile(F) and presence of external pathological pile (external pile congestion or subversion of dental line (E) and skin tag not tolerated from the patient (S)). We treated with Hemorrhoidopexy second and third degree pile without F or ES; with Hemorrhoidopexy and excision of external component every second and third degree pile with E or S and with complete semi-closed pile excision all third degree with F and IV degree piles. The number of post operative days of self administered analgesics was the primary end point and short/long term post operative complications, hospital stay, re-admission and recurrence were secondary end points. RESU...

Updates in Surgery

Proctology is one of the surgical specialties that suffered the most during COVID-19 pandemic. Us... more Proctology is one of the surgical specialties that suffered the most during COVID-19 pandemic. Using data from a crosssectional worldwide web survey, we aimed to snapshot the current status of proctologic practice in Italy with differences between three macro areas (North, Centre, South). Specialists affiliated to renowned scientific societies with an interest in coloproctology were invited to join a 27-item survey. Predictive power of respondents' and hospitals' demographics on the change of status of surgical activities was calculated. The study was registered at ClinicalTrials.gov (NCT 04392245). Of 299 respondents from Italy, 94 (40%) practiced in the North, 60 (25%) in the Centrer and 82 (35%) in the South and Islands. The majority were men (79%), at consultant level (70%), with a mean age of 46.5 years, practicing in academic hospitals (39%), where a dedicated proctologist was readily available (68%). Southern respondents were more at risk of infection compared to those from the Center (OR, 3.30; 95%CI 1.46; 7.47, P = 0.004), as were males (OR, 2.64; 95%CI 1.09; 6.37, P = 0.031) and those who routinely tested patients prior to surgery (OR, 3.02; 95%CI 1.39; 6.53, P = 0.005). The likelihood of ongoing surgical practice was higher in the South (OR 1.36, 95%CI 0.75; 2.46, P = 0.304) and in centers that were not fully dedicated to COVID-19 care (OR 4.00, 95%CI 1.88; 8.50, P < 0.001). The results of this survey highlight important factors contributing to the deadlock of proctologic practice in Italy and may inform the development of future management strategies.

Diseases of the Colon Rectum, 2002

The existence of an anatomic and functional separation between the puborectalis muscle and extern... more The existence of an anatomic and functional separation between the puborectalis muscle and external anal sphincter permits the performance of an abdominoendoanal excision, instead of an abdominoperineal excision, of the rectum and levator muscles, with preservation of a functioning external sphincter, in selected patients with very low rectal cancer and limited infiltration of the levator muscles. Seven patients (4 females; age, 48-69; mean, 60.7 +/- 7.8 years) with low posterior or posterolateral localized rectal cancers with infiltration of the puborectalis muscle (T4) were submitted to preoperative chemoradiation and excision of the rectum with the levator muscles, while the external sphincter and its innervation were preserved. A coloanal anastomosis was performed at the dentate line. At a median follow-up of 58 (range, 42-102) months, 6 patients (86 percent) were alive and disease free. No local recurrence was observed. Anorectal function, at three years from surgery was no worse than that of six patients of the same age and gender who had undergone more conventional coloanal anastomoses with preservation of the levator muscles. Selected patients with very low rectal cancers infiltrating the levator muscles (T4) and responding to preoperative chemoradiation therapy can still be treated with an advanced sphincter-sparing procedure, instead of an abdominoperineal excision. Oncologic and functional results seem to be satisfactory.

World Journal of Surgery, Mar 1, 2010

Background Preoperative chemoradiation followed by total mesorectal excision (TME) has become a s... more Background Preoperative chemoradiation followed by total mesorectal excision (TME) has become a standard treatment of preoperatively staged T3 low rectal cancers in many institutions; however, a direct comparison of generalized preoperative versus selective adjuvant chemoradiation has never been assessed in a clinical practice setting. Patients Over a 4-year period, 80 patients with T3 primary low adenocarcinoma of the rectum, judged operable at preoperative staging, were offered preoperative chemoradiation. Forty-seven patients (Group I) accepted the neoadjuvant treatment and 33 (Group II) preferred immediate surgery and postoperative chemoradiation if indicated. Results Major postoperative complications occurred in 21% of Group I versus in 11% of Group II (p = 0.3) patients. After a mean follow-up of 92 months, the local recurrence rate was 4 and 9% (p = 0.4), metastasis rate was 30 and 24% (p = 0.5), 5-year survival probability was 0.79 (95% CI = 0.49-0.92) and 0.82 (95% CI = 0.70-1.00) (log-rank test, p = 0.6) for Group I and Group II, respectively. Conclusions In T3 operable low rectal cancers, selective postoperative radiochemotherapy yielded similar long-term results regarding recurrence rate and survival as extended preoperative chemoradiation.

World Journal of Surgery, 2010

Background Preoperative chemoradiation followed by total mesorectal excision (TME) has become a s... more Background Preoperative chemoradiation followed by total mesorectal excision (TME) has become a standard treatment of preoperatively staged T3 low rectal cancers in many institutions; however, a direct comparison of generalized preoperative versus selective adjuvant chemoradiation has never been assessed in a clinical practice setting. Patients Over a 4-year period, 80 patients with T3 primary low adenocarcinoma of the rectum, judged operable at preoperative staging, were offered preoperative chemoradiation. Forty-seven patients (Group I) accepted the neoadjuvant treatment and 33 (Group II) preferred immediate surgery and postoperative chemoradiation if indicated. Results Major postoperative complications occurred in 21% of Group I versus in 11% of Group II (p = 0.3) patients. After a mean follow-up of 92 months, the local recurrence rate was 4 and 9% (p = 0.4), metastasis rate was 30 and 24% (p = 0.5), 5-year survival probability was 0.79 (95% CI = 0.49-0.92) and 0.82 (95% CI = 0.70-1.00) (log-rank test, p = 0.6) for Group I and Group II, respectively. Conclusions In T3 operable low rectal cancers, selective postoperative radiochemotherapy yielded similar long-term results regarding recurrence rate and survival as extended preoperative chemoradiation.

Diseases of the Colon & Rectum, 1999

PURPOSE: The possible existence of an anatomic and functional separation between the external sph... more PURPOSE: The possible existence of an anatomic and functional separation between the external sphincter and the puborectatis muscle has been reported in the medical literature. In this article we confirm, by means of anatomic and clinical observations, the presence of such a separation, focusing on its importance in understanding the pathway of diffusion for some suppurative anal lesions and to plan advanced sphincter-sparing procedures.

Diseases of the Colon & Rectum, 2001

The purpose of this study was to use electromyography to examine the behavior of the external sph... more The purpose of this study was to use electromyography to examine the behavior of the external sphincter, puborectalis muscle, and pubococcygeus muscle during attempted defecation in patients with symptoms of obstructed defecation and in normal subjects to highlight differences of clinical significance. A total of 35 patients (31 females) aged 20 to 80 (mean, 53.7 +/- 13.3) years with unprepared bowel who had normal colon transit time and obstructed defecation symptoms and 12 voluntary control subjects (7 females) aged 23 to 68 (mean, 48 +/- 11.5) years underwent an electromyography evaluation of the activity of the external sphincter, puborectalis muscle, and pubococcygeus muscle during attempted defecation. The patients were also examined in separate sessions with defecography and anal manometry. During attempted defecation, puborectalis muscle and external sphincter always reacted in the same manner. When evaluated with pubococcygeus muscle, three main patterns of activity were observed either in patients or in controls: 1) coordinated activation pattern; 2) coordinated inhibition pattern; and 3) uncoordinated or equivocal pattern: activation of pubococcygeus muscle with inhibition of puborectalis muscle/external sphincter, activation followed by inhibition of the three muscles, and activation followed by inhibition of pubococcygeus muscle and no change in the others. We never observed activation of puborectalis muscle/external sphincter concomitant with inhibition of pubococcygeus muscle. The inhibitory coordinated pattern occurred significantly (P = 0.01) more frequently in controls than in patients. These subjects also presented a significantly (P = 0.01) lower frequency of pubococcygeus muscle inhibition. Either activation or inhibition appears as a physiological behavior, possibly adopted in different circumstances, of the pelvic floor muscles during attempted defecation. The higher prevalence of coordinated inhibitory patterns in normal subjects and the lower frequency of pubococcygeus muscle inhibition in patients with symptoms of obstructed defecation, however, suggests that a loss of inhibition capacity progressing from pubococcygeus muscle to puborectalis muscle/external sphincter muscles could determine the insurgence of obstructed defecation symptoms in some subjects, who should therefore benefit from biofeedback retraining aimed at reacquisition of the inhibition capacity of all muscles of the pelvic floor during defecation.

Diseases of the Colon & Rectum, 2002

The existence of an anatomic and functional separation between the puborectalis muscle and extern... more The existence of an anatomic and functional separation between the puborectalis muscle and external anal sphincter permits the performance of an abdominoendoanal excision, instead of an abdominoperineal excision, of the rectum and levator muscles, with preservation of a functioning external sphincter, in selected patients with very low rectal cancer and limited infiltration of the levator muscles. Seven patients (4 females; age, 48-69; mean, 60.7 +/- 7.8 years) with low posterior or posterolateral localized rectal cancers with infiltration of the puborectalis muscle (T4) were submitted to preoperative chemoradiation and excision of the rectum with the levator muscles, while the external sphincter and its innervation were preserved. A coloanal anastomosis was performed at the dentate line. At a median follow-up of 58 (range, 42-102) months, 6 patients (86 percent) were alive and disease free. No local recurrence was observed. Anorectal function, at three years from surgery was no worse than that of six patients of the same age and gender who had undergone more conventional coloanal anastomoses with preservation of the levator muscles. Selected patients with very low rectal cancers infiltrating the levator muscles (T4) and responding to preoperative chemoradiation therapy can still be treated with an advanced sphincter-sparing procedure, instead of an abdominoperineal excision. Oncologic and functional results seem to be satisfactory.