Clinicopathological study of otogenic brain abscess
SSKM Hospital, Kolkata, India.Indian Journal of Otolaryngology and Head & Neck Surgery (Impact Factor: 0.05). 12/2009; 61(4):291-6. DOI: 10.1007/s12070-009-0085-6
Chronic suppurative otitis media (CSOM) is one of the commonest disease entities encountered in otolaryngology practice. Due to poor economic conditions poor hygiene lack of education and death of knowledge about the disease and its complications, we frequently encounter patients of CSOM with extracranial and intracranial complications. Among the intracranial complications otogenic brain abscess is one of the dreadest. With the improvement of healthcare and accessibility of the poor people to healthcare system and development of CT scan, MRI as diagnostic tools incidence of otogenic brain abscess is becoming less due to early diagnosis and interventions. The objectives of this study are to assess the incidence of brain abscesses to explore age, sex, variation to study clinical presentations and common pathogens responsible.
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ABSTRACT: The deceased was an unidentified young male found unconscious on a walkway. On autopsy, outer and inner fistulae of the left temporal bone, subcutaneous abscess in the left side of the neck and head, and an intracranial abscess were noted. A portion of the left temporal bone was removed and scanned by cone-beam computed tomography (CT) (normally used for dentistry applications) to evaluate the lesion. The cone-beam CT image revealed roughening of the bone wall and hypolucency of the mastoid air cells, consistent with an inflammatory bone lesion. According to autopsy and imaging findings, the cause of death was diagnosed as intracranial abscess with Bezold's abscess secondary to left mastoiditis as a complication of otitis media. Although determining the histopathology of bone specimens is time-consuming and costly work, we believe that use of cone-beam CT for hard tissue specimens can be useful in forensic practice.
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ABSTRACT: To evaluate the shift in epidemiological and complication profiles of chronic suppurative otitis media (CSOM) over two decades in a resource-limited economy. A retrospective analysis of the prevalence of CSOM and its complications in tertiary health institution a over a period of 2 years were compared between 203 cases seen in 2009 and December 2010 (present era); and 343 cases seen in 1990 and 1991 (previous era). Data were collected on the demographic characteristics of the patients, age of onset of otorrhoea, the disease type, laterality and complications of CSOM. The prevalence of CSOM significantly reduced from 9 % in the previous era to 5.1 % in the present era (P < 0.0001). The mean age of the recent group was 27.6 ± 19.3 years, and was 21.6 ± 18.2 years in the previous group. (P = 0.009). Although both group had peak age prevalence at 11–20 years, recent group saw more significant adult population >20 years of age (P ≤ 0.001). More significant cases of cholesteatoma were documented in the recent group (3.4 %) than previous era (0.9 %) (P = 0.02). Although no significant change was noted regarding the rates of complication of CSOM in the two eras (P = 0.18), there was a notable shift toward predominant extracranial pattern of complication in the recent group (P = 0.04). The prevalence of CSOM has shown a significant reduction after two decades and it appears that there has been a shift in the epidemiology of CSOM towards a predominantly adult population in the recent years. Despite an overall reduction in the incidence of intracranial complications of CSOM in our series, its complication rates have not changed remarkably after 20 years.