Role of high resolution computed tomography of temporal bone in management of chronic suppurative otitis media (original) (raw)
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Journal of Evolution of Medical and Dental Sciences
High Resolution Computed Tomography (HRCT), a modification of routine CT, provides a direct visual window in the temporal bone providing minute structural details. Purpose of the present study was to evaluate the suppurative diseases of middle ear and mastoid with their complications on HRCT and to correlate these imaging findings surgically. Our study shows good correlation of various HRCT findings in suppurative diseases of middle ear & mastoids with intra-operative findings. MATERIALS AND METHODS This retrospective study included 60 patients who were referred to the Department of Radiodiagnosis, Assam Medical College with clinically suspected temporal bone or ear pathologies. After detailed clinical examination, the patients were subjected to HRCT examination. The imaging findings of all cases were correlated with the surgical findings. RESULTS Out of 60 patients, 63.3% had unsafe CSOM with cholesteatoma. The HRCT findings with surgical correlation showed a high 91.89% sensitivity for identifying cholesteatoma. HRCT also provided good sensitivity for detecting erosion of scutum (90.32%), erosion of ossicular chain (86.96%) and erosion of lateral semi-circular canal (80%). HRCT had lower sensitivity (66.67%) for identifying facial canal dehiscence. CONCLUSION The HRCT findings showed a good sensitivity with intraoperative findings in identification of cholesteatoma, erosion of scutum, ossicular chain and semi-circular canal.
Journal of Karnali Academy of Health Scienecs, 2019
Introduction: Chronic suppurative otitis media (CSOM) is an important cause of middle ear disease and its complications challenge both otologist and radiologist. Methods: This is an observational descriptive study conducted at NAMS Bir Hospital. Total of 30 patients, referred for HRCT from the department of ENT were studied. Results: Out of 30 patients, 16 patients had CSOM with cholesteatoma and 14 patients had CSOM without cholesteatoma. HRCT presented sensitivity, specificity, positive predictive value, negative predictive value and accuracy of 87.5%, 85.7%, 87.5%, 85.7% and 86.7% respectively in diagnosing CSOM with cholesteatoma. HRCT presented sensitivity and specificity of 85.7% and 87.5% in identification of malleus erosion, sensitivity and specificity of 86.7% and 80%, in the identification of incus erosion. HRCT showed the specificity of 85% with relatively low sensitivity of 70% in identification of erosion of stapes. HRCT showed a sensitivity of 100% and specificity of 85.7%. HRCT presented sensitivity and specificity of 83.3% and 95.8% in diagnosing tegmen tympanum erosion. HRCT showed the highest sensitivity (100%) and specificity (100%) in diagnosing erosion of sigmoid sinus plate and mastoid cortex. HRCT showed relatively low sensitivity of 66.7% and 75% in diagnosing erosion of LSCC and facial canal respectively. Conclusion: The HRCT has a valuable role in preoperative evaluation of a case of CSOM. It has high sensitivity in diagnosing CSOM with cholesteatoma. However, HRCT has relatively low sensitivity for LSCC and facial nerve canal erosion.
Correlation of HRCT mastoid with clinical presentation and operative findings in ear diseases
International Journal of Otorhinolaryngology and Head and Neck Surgery
The human temporal bone has an extremely complex structure. Direct axial and coronal CT sections are quite satisfactory for imaging the anatomy of the temporal bone but most of the normal and pathological details of the temporal bone are better visualized with direct sagittal CT sections. The sagittal projection is of interest for surgeons, as it has the advantage of following the plane of surgical approach. HRCT is found to be extremely useful for evaluating the diseases involving the external auditory canal, middle ear cavity, vertical segment of facial nerve canal, vestibular aqueduct, tegmen tympani, sigmoid sinus plate, sinodural angle, carotid canal, jugular fossa, infra and supralabrynthine air cells and temporomandibular joint. HRCT has contributed greatly to an understanding of the complex anatomy and spatial relationship of the minute structures of hearing and balance organs, which are packed into a small pyramidshaped petrous temporal bone. HRCT shows not only soft tissue extension but also gives a more sensitive demonstration of calcification. It has also become useful ABSTRACT Background: HRCT is found to be extremely useful for evaluating the ear diseases involving the external auditory canal, middle ear cavity, vertical segment of facial nerve canal, vestibular aqueduct, tegmen tympani, sigmoid sinus plate, sinodural angle, carotid canal, jugular fossa, infra and supralabrynthine air cells and temporomandibular joint. Our main objective was to correlate the clinical presentation and operative findings of ear diseases with HRCT mastoid. Methods: This study is done in our institute otorhinolaryngology dept. from April 2014 to April 2016. This is prospective study involves 36 patient belonging to different age and sex groups with high suspicious of ear diseases. We have taken detail history of each patient with complete ear nose throat examination done and after that all patient were investigated with routine blood investigation, X-ray and HRCT mastoid to correlate clinical finding and subjected for operation to compare operative findings with HRCT finding. Results: Determined using Pearson chi square test indicated a statistically significant correlation between HRCT temporal bone with clinical presentation and operative findings of ear diseases (p<0.05). Conclusions: With the advent of modern high-resolution CT scanners, detailed demonstration of temporal bone anatomy is practically possible now. We have been able to identify many significant structures not demonstrated by any of the known imaging modalities. The improved contrast and soft tissue a definition possible with HRCT has resulted in production of excellent images of soft tissue lesions in air spaces. Hence HRCT appears to be the diagnostic modality of choice for cholesteatomas and other soft tissue lesions in middle ear.
Arq. int. …, 2011
Introduction: The chronic otitis media (COM) is a prevalent disease and the most frequent cause of indication to mastoidectomy. Many studies have evaluated the use of tomography (CT) of temporal bones for preoperative evaluation of COM and its indication in the preoperative approach is still controversial nowadays. Objective: To evaluate the sensitivity of the clinical and radiological findings of COM according to the intraoperative surgical results and histopathological findings. Method: Transversal retrospective study through collection of record data of patients with COM submitted to mastoidectomy in the period from 2007 through 2008 in our service. Results: From a total of 82 ears, 40.24% had cholesteatoma. The CT presented 72.73% of sensitivity in the identification of cholesteatoma, 56.67% in the identification of changes to the ossicular chain and 100% in that of erosion of the lateral semicircular canal. Conclusion: The clinical and radiological findings showed a high level sensitivity with intraoperative findings as regards to the presence of cholesteatoma, large changes of the ossicular chain and erosion of the lateral semicircular canal. For minor changes to the ossicular chain, the facial nerve canal and the tympanic tegmen they described low sensitivity.
2016
BACKGROUND AND OBJECTIVES: To study the HRCT temporal bone findings in chronic middle ear infections with reference to its extent and complications. MATERIALS AND METHODS: After an initial clinical assessment, 30 patients diagnosed clinically with chronic suppurative otitis media (CSOM) were referred for a HRCT of temporal bone which was done with a Siemens’ 16 slice MDCT scanner. RESULTS: Of the 30 patients, 60% were males and 40% were females. Otorrhoea (100%) is the most common symptom. Scutum was eroded in 23 cases. Malleus (18 cases) is the most commonly eroded among the ossicles. Mastoiditis and mastoid abscess (22%) was the most common complication of CSOM followed by Malleus head erosion (60%). Intracranial complications like abscess, Dural sinus thrombosis (4%), Facial canal Dehiscence (4%) , Tegmen tympani Erosion (2%). Cochlea erosion, Tegmen mastoideum Erosion, Lateral semicircular canal erosion were not observed in any of the cases. Cholesteatoma were observed in 30 cas...
International Journal of Advances in Medicine, 2019
Background: Prior to surgery it is very important that the surgeon is fully aware, and he should have the clear picture as to the extent of the disease and the nature of the disease to give satisfactory surgical outcomes for the patient. HRCT (High resolution computed tomography) is one such guiding tool for the surgeon. The objective was to study usefulness of HRCT scan in attico-antral disease in depicting the status of the middle ear structures.Methods: A total of 30 patients were studied. HRCT temporal bone was performed by using SIEMENS EMOTION 16 slice CT machine in axial plane and coronal images were reformatted. Findings of HRCT temporal bone were recorded. Findings of mastoid exploration surgery were recorded. Report of HRCT of temporal bone was correlated with surgical findings and tabulated using percentages.Results: Surgery showed cholesteatoma in 26 (86.6%) patients. Epitympanum was involved in 29 (96.6%) patients in HRCT and 30 (100%) patients at surgery. Extension b...
Role of Computed Tomography in diagnosis of complications in chronic suppurative otitis media
Annals of Tropical Medicine and Public Health, 2019
Chronic otitis media is chronic inflammation of middle ear cavity, it present with longstanding discharging ear and perforated tympanic membrane with or without cholesteatoma and other complications. Cross sectional study was performed to identify the role of computed tomography in diagnosis of complications in chronic suppurative otitis media among 40 patients between June 2018 and June 2019. Aim: To identify role of CT scan in diagnosis of anatomical and pathological effects of chronic suppurative otitis media as: pneumatisation of mastoid, soft tissue mass in middle ear cleft and mastoid, cholesteatoma, bones erosions, facial nerve canal dehiscence, labyrinthine and semicircular canal fistula.Patient and Methods: 40 patients included in our study between period June 2018 to June 2019, they are referred from otology department to radiology department in AL Hillah General Teaching Hospital that thin slices CT temporal bone was taken for all these patients. Results: Age incidence: between 15-20 years was 3 of 40 patients (7.5%), 20-40 was 25 (62.5%), 40-50 was 12 0f 40 patients (30%). Mean age is 32.77 years. 16 of 40 patients were female (40%), 24 of 40 patients were male (60%).Male to female ratio 1.5:1. Incidence of symptoms and signs was: headache & pain in 6 patients (15%), vertigo in 5 (12.5%), hearing loss in 30 (75%), discharging ear in 40 (100%), and facial palsy in 2 (5%). Pathology in middle ear: Granulation in 20 cases (50%), cholesteatoma in 15 (37.5%), and polyp in 5 (12.5%). Pneumatisation of mastoid bone: well in 25 cases (62.5%), sclerotic in 13 (32.5%), and poor in 2 (5%). Middle ear and mastoid mass: in CT scan 25 cases (62.5%) and in surgery 24 (60%). Cholesteatoma incidence: in CT scan 15 cases (37.5%) and in surgery 15 (37.5%). Incidence of complications: scutum erosion in CT 14 (35%) in surgery 15 (37.5%), ossicular erosion in CT 11 (27.5%), in surgery 8 (20%), facial canal dehiscence in CT 2 (5%), in surgery 3 (7.5%), labyrinthine fistula in CT 2 (5%), in surgery 1 (2.5%), semicircular canal fistula in CT 3 (7.5%), in surgery 2 (5%), tegument erosion in CT 1 (2.5%), in surgery 2 (5%), and tegument tympani erosion in CT 1 (2.5%) in surgery 1 (2.5%).
Indian Journal of Otolaryngology and Head & Neck Surgery, 2015
Chronic suppurative otitis media (CSOM) presents with a typical history of recurrent otorrhoea with tympanic membrane perforation. The diagnosis of cholesteatoma is usually made on otologic examination. High resolution computed tomography (HRCT) is indicated to evaluate the extension and the complications of cholesteatoma. The aim of the work was to study the role of HRCT in detecting, evaluating diagnosing and managing CSOM. All patients presenting with CSOM who were planned for mastoid exploration surgery in department of ENT, Gauhati Medical College and Hospital within a period of 2 years-from 1st January, 2013 to 31th December, 2014, were taken up for the study. HRCT mastoids done routinely before cholesteatoma surgery, but with improved resolution, to characterize all middle ear structures and complications of the disease prior to surgery, might guide as road map during mastoid explorations for unsafe CSOM. The important role of HRCT lies on the early detection of cholesteatoma, and more conservative surgical procedures can be used to eradicate the disease.
A Study of Radiological Changes in Csom and Their Co-Relation with Intra-Operative Surgical Finding
International Journal of Medical and Biomedical Studies, 2020
Introduction: HRCT temporal bone is the currently widely used investigation for the chronic otitis media patient especially in unsafe disease. Aim: This study was conducted to assess the condition of the middle ear in CSOM by HRCT temporal bone and compare them with intraoperative finding of the middle ear cleft . Method: Study group includes patients of Attico-antral variety of CSOM presenting in ENT OPD in our institution over a period of 18 months who undergone Computed Tomography Temporal bone followed by Surgical Procedure. Results: After study it was observed that CT scan can reliably detect bony & soft tissue changes in middle ear and intracranial complication. It can detect soft tissue in the middle ear but can not differentiate between soft tissue and cholesteatoma. Conclusion: CT scan provides excellent anatomical details and pathological changes of the ear and mastoid. Scanning all the patients is not feasible and justified, so we need to select patients in whom diagnosi...
High resolution computed tomography of temporal bone in the evaluation of otologic diseases
International Journal of Otorhinolaryngology and Head and Neck Surgery, 2017
HRCT is particularly helpful in evaluating the anatomy and pathology of external auditory canal, middle ear cavity, vestibular aqueduct, tegmen tympani, sigmoid sinus plate, vertical segment of facial nerve canal, sinodural angle, carotid canal, jugular fossa, infra and supralabrynthine air cells and temporomandibular joint; both soft tissue extension and significantly sensitive ABSTRACT Background: Conventional radiological methods like X-ray mastoid have limited ability to delineate the details of the complex temporal bone and cochlea-vestibular anatomy and disease pathology. This can be overcome by the use of High resolution computed tomography (HRCT) evaluation of the temporal bone. HRCT is helpful in evaluating the anatomy and pathology type and extent of disease, thereby helps in preoperative planning. Methods: The CT scan of forty five patients attending the outpatient department of otorhinolaryngology in a tertiary care centre between August 2014 to August 2017 was evaluated in this study. Each CT scan was interpreted by an otolaryngologist and a radiologist and interpretation was by consensus. The data collected was evaluated and results are reported as rates and proportions (%). Results: The study evaluated CT scan of 45 patients of which 35 were male patients and 10 were female patients with age ranging from 5 years to 75 years. Most of these patients belonged to the 21-30, 31-40 age groups [9 (20%) in each group]. Infections of middle ear cleft (all with cholesteatoma), fractures of the temporal bone, anomalies and tumors of the external auditory canal and middle ear were the pathologies observed in these CT scans with infection (otomastoiditis) [23 (51.1%)] being the most common pathology observed. Conclusions: Pre-operative CT scan may not only help in identifying the nature, extent of infectious disease including ossicular, bony erosions; it may also identify anomalies in the temporal bone and surrounding structures. Thus, HRCT temporal bone will help the surgeon in planning effective surgical strategy, reducing morbidity during the surgery.