José Arce - Academia.edu (original) (raw)
Papers by José Arce
Neumología Pediátrica, 2021
Introducción: La información obtenida mediante tomografía computada multidetector (TCMD) y el uso... more Introducción: La información obtenida mediante tomografía computada multidetector (TCMD) y el uso de software para reconstrucción permiten en la actualidad demostrar con exacta precisión los procesos patológicos que comprometen la vía aérea y estructuras extrínsecas que pueden producir compresión. Permite además demostrar el compromiso pulmonar mas allá de una zona obstruida. La posibilidad de visualizar diferentes densidades conjuntamente en reconstrucciones 3D facilita esta labor. Objetivo: Mostrar la utilidad de la reconstrucción tridimensional (3D) en patología de la vía aérea particularmente compresión vascular extrínseca. Material y método: Se ilustran casos clínicos pediátricos examinados con TCMD por sospecha de compresión de la vía aérea por anomalías vasculares y otras causas, en los cuales la reconstrucción 3D demostró ser una importante herramienta diagnóstica no invasiva. Los estudios fueron efectuados en equipo Siemens Somatom Definition Flash, de 128 canales, con una ...
Revista chilena de radiología, 2017
Revista chilena de infectología, 2011
Espondilodiskitis caused by Kingella kingae in children: a case report During the last years, spo... more Espondilodiskitis caused by Kingella kingae in children: a case report During the last years, spondilodiskitis due to Kingella kingae has been a new target of interest, since it is the second agent that causes non tuberculous espondilodiskitis in children, after Staphylococcus aureus. Its clinical presentation is very inespecifi c, sometimes with fever, abdominal or lumbar disconfort, nocturnal pain, altered walking and sedestation. Images, culture methods and PCR (polymerase chain reaction) can be helpful for diagnosis, although in an important percent of the cases, etiology cannot be determined. Although there are no established guidelines for treatment, before the suspicion, empiric antibiotic treatment should be started for good prognosis. We describe a case of a 3 year old boy, who had this disease and then a review about spondilodiskitis in childhood and microbiological aspects of Kingella kingae.
Revista chilena de enfermedades respiratorias, 2012
Unilateral hyperlucent hemithorax in children Different causes leading to an hyperlucent hemithor... more Unilateral hyperlucent hemithorax in children Different causes leading to an hyperlucent hemithorax in radiographs are revised, complementing the study with computed tomography for further precision. Pathological characteristics and their images are analyzed.
Revista chilena de radiología, 2004
Anatomy, embryology and ultrasonographic representation of inguinal region are reviewed. Patholog... more Anatomy, embryology and ultrasonographic representation of inguinal region are reviewed. Pathology of the groin and their study is discussed with special emphasis in hernias in pediatric patient.
Revista chilena de radiología, 2002
Introduction. Severe pulmonary involvement may occur after adenovirus infection and longstanding ... more Introduction. Severe pulmonary involvement may occur after adenovirus infection and longstanding pulmonary sequelae may observe essentially bronchiolitis obliterans (BO). Objective. To evaluate the CT findings in children who had suffered adenovirus infection. Patients and method. We reviewed retrospectively the CT findings in 23 children with proven adenovirus infection, excluding those patients with other pulmonary diseases. Results. In all patients CT showed findings consistent with bronchiolitis obliterans, characterized by diffuse or multifocal air trapping with a secondary mosaic attenuation (23 patients), peribronchial thickening and decreased vascularization in the involved areas (23 patients), bronchiectasis (23 patients) and segmental atelectasis (19 patients). In 3 patients the collapsed lobe was resected and histology showed BO. Conclusions. CT was helpful in the study of patients who had suffered adenoviruses infection and showed findings consistent with BO in all of them. This infection could be related with a greater predominance of genome type 7h in South American countries. The amount of pulmonary collapse could be related with the more aggressive serotype of adenovirus in our country.
Revista chilena de radiología, 2005
Introduction: The role of the upper gastrointestinal radiography study (UGIR) in the evaluation o... more Introduction: The role of the upper gastrointestinal radiography study (UGIR) in the evaluation of children with vomiting, has not been well defined in our country, specially regarding its role in the diagnosis of gastroesophageal reflux (GER). GER is in most cases a physiologic condition, manifested by vomiting and/or regurgitation in infants. The American Academy of Pediatrics has insisted on this point, considering the UGIR as a useful study in order to rule out an anatomical cause of vomiting, but in most cases, the clinical history and physical examination are enough to make the diagnosis. Radiologists are performing examinations, in most cases unnecessary and the results are not interpreted appropriately. In a great number of patients, the UGIR is done in order to obtain a maternal license, based on our current law. Patients and Methods: A total of 190 children in whom an UGIR was performed in our Hospital, were included in a prospective study, from April 1, to September 30, 2004. In every case, many parameters were consigned, including clinical history, the reason for the study, etc. Results: This study revealed that most children referred for UGIR study, were infants with vomiting and/or regurgitation without a real indication for the study. In 46 patients (24%), the mother was already under maternal license and in 39 (85%) of these patients, the study was asked for because of vomiting and median age was 4 months. In those infants in whom the mothers did not have license (114 mothers), median age was 3 months. Thirty (26%) of these 114 mothers came to our Hospital in order to obtain a medical license based on the results of the UGIR study. GER was doccumented in 81 patients and 3 had a swallowing disorder. In none of them, an anatomical condition was detected, as the cause of vomiting. Conclusions: Our results confirm that the use of UGIR in children is totally confusing and misunderstood in our country, and in most cases it has been used in order to obtain a medical license for the mothers. We propose either changing the current law in order to extend the maternal license for all the mothers or try to find another diagnostic method. We also propose a standard protocol for the UGIR examination.
Pediatric Radiology, 2002
Revista chilena de radiología, 2005
: : : Spontaneous pneumomediastinum is a rare disorder, usually benign and self-limited. It occur... more : : : Spontaneous pneumomediastinum is a rare disorder, usually benign and self-limited. It occurs in young people without an apparent cause or precipitating factor. Cervical symptoms exclusive, without subcutaneous emphysema are infrequent. We presente two cases that were evaluated in emergency room and the diagnosis was erroneous. The initial study included a neck and cervical X-ray film. Second lecture in radiology department detected prevertebral cervical air and the patients were posteriorly studied with neck and thorax CT and pneumomediastinum was confirmed. None pulmonary disorder was found. Pneumomediastinum phisiopathologhy and also aggressive clinic investigation in these patients are discussed.
Pediatric Radiology, 1998
Salivary gland lesions are uncommon in children and may be related to the parotid, submandibular ... more Salivary gland lesions are uncommon in children and may be related to the parotid, submandibular or sublingual glands. Inflammatory lesions are the most common cause of salivary gland abnormalities in children and can be due to acute viral, acute suppurative, or recurrent acute or chronic inflammation. Intraparotid lymphadenitis may also occur, as in cat-scratch disease or in other causes of cervical lymphadenitis. Salivary gland neoplasms are rare in children, and most of them are benign including mainly hemangioma, pleomorphic adenoma, or lymphangioma. Other lesions, such as sialolithiasis, mucocele, or ranula, may also be seen. Ultrasonography should be the initial imaging study used for the examination of salivary gland lesions in children, given the fact that most of such lesions are benign and are shown up clearly by sonography. In most cases, this technique permits the differentiation of intraglandular and extraglandular lesions, and may suggest the correct diagnosis. The entire lesion could not be totally depicted by US however, and other imaging techniques such as CT or MRI may be necessary. Vascular lesions can be demonstrated more clearly through the use of color Doppler imaging. Some of the lesions may appear similar, and clinical correlation is important for the differential diagnosis. This article discusses the sonographic appearance and clinical manifestations of the spectrum of salivary gland abnormalities that may occur in children.
Pediatric Radiology, 1999
Simple intratesticular cysts are rare in children and have been considered the most uncommon caus... more Simple intratesticular cysts are rare in children and have been considered the most uncommon cause of scrotal cystic masses in this age group. The exact etiology of these lesions is still unclear. High-resolution ultrasonography has been proved to be a reliable and accurate imaging modality in the evaluation of scrotal abnormalities in children. We report the sonographic findings in five boys aged from 4 to 10 months who presented with a scrotal mass and had a simple intratesticular cyst. Ultrasonography showed that all of them displayed a characteristic appearance and provided the necessary information to perform conservative surgery, with testicular preservation in four infants. In one infant, the cyst involved most of the testis, and an orchiectomy was performed. Pathological examination revealed a single smooth-walled cystic structure, with clear and serous fluid, lined with flattened epithelial cells in all of the infants. Our findings appear to support the hypothesis that these cysts could correspond to mesothelial inclusions. Sonographically, differential diagnosis should include mainly epidermoid cysts of the testis, which are mostly cystic but characteristically contain some echoes within them, in contrast to simple cysts and cysts of the tunica albuginea, which lie outside the testicular parenchyma.
![Research paper thumbnail of [Espondilodiskitis caused by Kingella kingae in children: a case report]](https://a.academia-assets.com/images/blank-paper.jpg)
](Revista chilena de infectologia: organo oficial de la Sociedad Chilena de Infectologia
During the last years, spondilodiskitis due to Kingella kingae has been a new target of interest,... more During the last years, spondilodiskitis due to Kingella kingae has been a new target of interest, since it is the second agent that causes non tuberculous espondilodiskitis in children, after Staphylococcus aureus. Its clinical presentation is very inespecific, sometimes with fever, abdominal or lumbar disconfort, nocturnal pain, altered walking and sedestation. Images, culture methods and PCR (polymerase chain reaction) can be helpful for diagnosis, although in an important percent of the cases, etiology cannot be determined. Although there are no established guidelines for treatment, before the suspicion, empiric antibiotic treatment should be started for good prognosis. We describe a case of a 3 year old boy, who had this disease and then a review about spondilodiskitis in childhood and microbiological aspects of Kingella kingae.
Neumología Pediátrica, 2021
Introducción: La información obtenida mediante tomografía computada multidetector (TCMD) y el uso... more Introducción: La información obtenida mediante tomografía computada multidetector (TCMD) y el uso de software para reconstrucción permiten en la actualidad demostrar con exacta precisión los procesos patológicos que comprometen la vía aérea y estructuras extrínsecas que pueden producir compresión. Permite además demostrar el compromiso pulmonar mas allá de una zona obstruida. La posibilidad de visualizar diferentes densidades conjuntamente en reconstrucciones 3D facilita esta labor. Objetivo: Mostrar la utilidad de la reconstrucción tridimensional (3D) en patología de la vía aérea particularmente compresión vascular extrínseca. Material y método: Se ilustran casos clínicos pediátricos examinados con TCMD por sospecha de compresión de la vía aérea por anomalías vasculares y otras causas, en los cuales la reconstrucción 3D demostró ser una importante herramienta diagnóstica no invasiva. Los estudios fueron efectuados en equipo Siemens Somatom Definition Flash, de 128 canales, con una ...
Revista chilena de radiología, 2017
Revista chilena de infectología, 2011
Espondilodiskitis caused by Kingella kingae in children: a case report During the last years, spo... more Espondilodiskitis caused by Kingella kingae in children: a case report During the last years, spondilodiskitis due to Kingella kingae has been a new target of interest, since it is the second agent that causes non tuberculous espondilodiskitis in children, after Staphylococcus aureus. Its clinical presentation is very inespecifi c, sometimes with fever, abdominal or lumbar disconfort, nocturnal pain, altered walking and sedestation. Images, culture methods and PCR (polymerase chain reaction) can be helpful for diagnosis, although in an important percent of the cases, etiology cannot be determined. Although there are no established guidelines for treatment, before the suspicion, empiric antibiotic treatment should be started for good prognosis. We describe a case of a 3 year old boy, who had this disease and then a review about spondilodiskitis in childhood and microbiological aspects of Kingella kingae.
Revista chilena de enfermedades respiratorias, 2012
Unilateral hyperlucent hemithorax in children Different causes leading to an hyperlucent hemithor... more Unilateral hyperlucent hemithorax in children Different causes leading to an hyperlucent hemithorax in radiographs are revised, complementing the study with computed tomography for further precision. Pathological characteristics and their images are analyzed.
Revista chilena de radiología, 2004
Anatomy, embryology and ultrasonographic representation of inguinal region are reviewed. Patholog... more Anatomy, embryology and ultrasonographic representation of inguinal region are reviewed. Pathology of the groin and their study is discussed with special emphasis in hernias in pediatric patient.
Revista chilena de radiología, 2002
Introduction. Severe pulmonary involvement may occur after adenovirus infection and longstanding ... more Introduction. Severe pulmonary involvement may occur after adenovirus infection and longstanding pulmonary sequelae may observe essentially bronchiolitis obliterans (BO). Objective. To evaluate the CT findings in children who had suffered adenovirus infection. Patients and method. We reviewed retrospectively the CT findings in 23 children with proven adenovirus infection, excluding those patients with other pulmonary diseases. Results. In all patients CT showed findings consistent with bronchiolitis obliterans, characterized by diffuse or multifocal air trapping with a secondary mosaic attenuation (23 patients), peribronchial thickening and decreased vascularization in the involved areas (23 patients), bronchiectasis (23 patients) and segmental atelectasis (19 patients). In 3 patients the collapsed lobe was resected and histology showed BO. Conclusions. CT was helpful in the study of patients who had suffered adenoviruses infection and showed findings consistent with BO in all of them. This infection could be related with a greater predominance of genome type 7h in South American countries. The amount of pulmonary collapse could be related with the more aggressive serotype of adenovirus in our country.
Revista chilena de radiología, 2005
Introduction: The role of the upper gastrointestinal radiography study (UGIR) in the evaluation o... more Introduction: The role of the upper gastrointestinal radiography study (UGIR) in the evaluation of children with vomiting, has not been well defined in our country, specially regarding its role in the diagnosis of gastroesophageal reflux (GER). GER is in most cases a physiologic condition, manifested by vomiting and/or regurgitation in infants. The American Academy of Pediatrics has insisted on this point, considering the UGIR as a useful study in order to rule out an anatomical cause of vomiting, but in most cases, the clinical history and physical examination are enough to make the diagnosis. Radiologists are performing examinations, in most cases unnecessary and the results are not interpreted appropriately. In a great number of patients, the UGIR is done in order to obtain a maternal license, based on our current law. Patients and Methods: A total of 190 children in whom an UGIR was performed in our Hospital, were included in a prospective study, from April 1, to September 30, 2004. In every case, many parameters were consigned, including clinical history, the reason for the study, etc. Results: This study revealed that most children referred for UGIR study, were infants with vomiting and/or regurgitation without a real indication for the study. In 46 patients (24%), the mother was already under maternal license and in 39 (85%) of these patients, the study was asked for because of vomiting and median age was 4 months. In those infants in whom the mothers did not have license (114 mothers), median age was 3 months. Thirty (26%) of these 114 mothers came to our Hospital in order to obtain a medical license based on the results of the UGIR study. GER was doccumented in 81 patients and 3 had a swallowing disorder. In none of them, an anatomical condition was detected, as the cause of vomiting. Conclusions: Our results confirm that the use of UGIR in children is totally confusing and misunderstood in our country, and in most cases it has been used in order to obtain a medical license for the mothers. We propose either changing the current law in order to extend the maternal license for all the mothers or try to find another diagnostic method. We also propose a standard protocol for the UGIR examination.
Pediatric Radiology, 2002
Revista chilena de radiología, 2005
: : : Spontaneous pneumomediastinum is a rare disorder, usually benign and self-limited. It occur... more : : : Spontaneous pneumomediastinum is a rare disorder, usually benign and self-limited. It occurs in young people without an apparent cause or precipitating factor. Cervical symptoms exclusive, without subcutaneous emphysema are infrequent. We presente two cases that were evaluated in emergency room and the diagnosis was erroneous. The initial study included a neck and cervical X-ray film. Second lecture in radiology department detected prevertebral cervical air and the patients were posteriorly studied with neck and thorax CT and pneumomediastinum was confirmed. None pulmonary disorder was found. Pneumomediastinum phisiopathologhy and also aggressive clinic investigation in these patients are discussed.
Pediatric Radiology, 1998
Salivary gland lesions are uncommon in children and may be related to the parotid, submandibular ... more Salivary gland lesions are uncommon in children and may be related to the parotid, submandibular or sublingual glands. Inflammatory lesions are the most common cause of salivary gland abnormalities in children and can be due to acute viral, acute suppurative, or recurrent acute or chronic inflammation. Intraparotid lymphadenitis may also occur, as in cat-scratch disease or in other causes of cervical lymphadenitis. Salivary gland neoplasms are rare in children, and most of them are benign including mainly hemangioma, pleomorphic adenoma, or lymphangioma. Other lesions, such as sialolithiasis, mucocele, or ranula, may also be seen. Ultrasonography should be the initial imaging study used for the examination of salivary gland lesions in children, given the fact that most of such lesions are benign and are shown up clearly by sonography. In most cases, this technique permits the differentiation of intraglandular and extraglandular lesions, and may suggest the correct diagnosis. The entire lesion could not be totally depicted by US however, and other imaging techniques such as CT or MRI may be necessary. Vascular lesions can be demonstrated more clearly through the use of color Doppler imaging. Some of the lesions may appear similar, and clinical correlation is important for the differential diagnosis. This article discusses the sonographic appearance and clinical manifestations of the spectrum of salivary gland abnormalities that may occur in children.
Pediatric Radiology, 1999
Simple intratesticular cysts are rare in children and have been considered the most uncommon caus... more Simple intratesticular cysts are rare in children and have been considered the most uncommon cause of scrotal cystic masses in this age group. The exact etiology of these lesions is still unclear. High-resolution ultrasonography has been proved to be a reliable and accurate imaging modality in the evaluation of scrotal abnormalities in children. We report the sonographic findings in five boys aged from 4 to 10 months who presented with a scrotal mass and had a simple intratesticular cyst. Ultrasonography showed that all of them displayed a characteristic appearance and provided the necessary information to perform conservative surgery, with testicular preservation in four infants. In one infant, the cyst involved most of the testis, and an orchiectomy was performed. Pathological examination revealed a single smooth-walled cystic structure, with clear and serous fluid, lined with flattened epithelial cells in all of the infants. Our findings appear to support the hypothesis that these cysts could correspond to mesothelial inclusions. Sonographically, differential diagnosis should include mainly epidermoid cysts of the testis, which are mostly cystic but characteristically contain some echoes within them, in contrast to simple cysts and cysts of the tunica albuginea, which lie outside the testicular parenchyma.
Revista chilena de infectologia: organo oficial de la Sociedad Chilena de Infectologia
During the last years, spondilodiskitis due to Kingella kingae has been a new target of interest,... more During the last years, spondilodiskitis due to Kingella kingae has been a new target of interest, since it is the second agent that causes non tuberculous espondilodiskitis in children, after Staphylococcus aureus. Its clinical presentation is very inespecific, sometimes with fever, abdominal or lumbar disconfort, nocturnal pain, altered walking and sedestation. Images, culture methods and PCR (polymerase chain reaction) can be helpful for diagnosis, although in an important percent of the cases, etiology cannot be determined. Although there are no established guidelines for treatment, before the suspicion, empiric antibiotic treatment should be started for good prognosis. We describe a case of a 3 year old boy, who had this disease and then a review about spondilodiskitis in childhood and microbiological aspects of Kingella kingae.