Chronic Otitis Media
نویسندگان
چکیده
Cholesteatoma may be classified as either primary or secondary. Primary cholesteatoma occurs when its formation precedes the TM perforation and Secondary cholesteatoma develops from an ingrowth of skin through a TM perforation. Chronic Secretory Otitis Media (CSOM) In chronic secretory otitis media, fluid may be present for more than two months in the middle ear behind a TM with increased vascularization and opacification but there are no infectious signs such as bulging or pressure in the middle ear. Atelectatic Chronic Otitis Media (Atelectatic COM) Atelectatic COM occurs with inward displacement of the TM. This pathology is commonly believed to be related to Eustachian tube dysfunction causing a negative pressure in the middle ear; congenital amniotic fluid keratin implantation causing focal middle ear inflammation that medializes a segment of the tympanic membrane is a another hypothetical etilogy. The pressure generates circumscribed or generalized TM retraction, either central or peripheral. The chronic condition of the ear affection may generate tympanic areas that have lost their middle layer, Chronic Otitis Media
منابع مشابه
Study of 212 cases with chronic otitis media in referral patients to Tehran Amir Aalam hospital during the first half of 1380 (2001).
Introduction: Otitis media is among the common infections in children. Over 80% of 1-6 years old children are infected with acute bacterial otitis media and despite the widespread using antibiotics for its treatment too much infectious complications are seen in these patients. The purpose of this study was to study chronic otitis media. Materials & Methods: This study was a descriptive study b...
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The occurrence of mast cells is studied in the normal facial nerve and in the facial nerve post mortem exam of patients with chronic suppurative otitis media without associated facial paralysis. A small number of mast cells were found in the normal facial nerve. These cells were usually located in close proximity to the endoneural and epineural blood vessels. The number of mast cells was i...
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The authors presented a proposal for surgical classification of chronic suppurative otitis media which may be used' for evaluating the surgical outcome of the disease.
متن کاملThe result of hearing in patients treated by surgery due to chronic otitis media
Background: Hearing loss due to chronic otitis media is common. The purpose of this study was to evaluate hearing before and after canal wall up, canal wall down mastoidectomy and tympanoplasty. Methods: From 2004 to 2007, all patients with chronic otitis media who were admitted at the Department of Otolaryngology, Babol Medical University were studied. For 126 patients' canal wall up, canal wa...
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Introduction: Although the incidence and prevalence of chronic suppurative otitis media (CSOM) has been decreased in recent decades, but it is still a major health problem in both developing and developed countries. CSOM can cause major and life-threatening complications such as hearing loss, meningitis and cerebral abscess. Since hearing loss is the most common complication of CSOM, we aimed ...
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This study evaluated the histopathologic changes in the round window niche. , and membrane in cases of chronic suppurative otitis media. The pathologic process was found in all subjects. Fibrocystic or fibrous tissue was most commonly seen, while active granulation was less developed. The round window membrane was thicker and inflamed throughout its layers. Inflammatory invasion of the inne...
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