Seventy-three cases of adult cholesteatoma, including 52 cases with pars flaccida type cholesteatoma and 21 with pars tensa type cholesteatoma, were examined using high resolution computed tomography, in both axial (lateral semicircular canal plane) and coronal sections (cochlear, vestibular and antral plane). These cases were classified into two subtypes according with the presence of extensio...

In order to provide a basis for meaningful exchange of information among those treating cholesteatoma, the Committee on Nomenclature of the Japan Otological Society (JOS) was appointed in 2004 to create a cholesteatoma staging system as simple as possible to use in clinical practice in Japan. Following the announcement of preliminary criteria for the staging of pars flaccida (attic) cholesteato...

OBJECTIVES/HYPOTHESIS High negative pressure in the middle ear was thought to be closely related to the etiology of retraction-type cholesteatoma. Recently, it has been detected that mechanical forces are important factors in epithelial turnover and affect cytoskeletal remodeling. Continuous negative pressure in the middle ear may possibly accelerate the proliferation and differentiation of epi...

Congenital cholesteatoma (CC) is a whitish mass lesion found in the middle ear cleft behind intact tympanic membrane early life. It relatively uncommon disease and shows its growth extension over period of time. CC evidenced with no prior history perforation, otorrhea, previous otologic procedures, normal pars tensa, flaccida. The etiopathogenesis still controversial; however, epithelial cell r...

Aim: To differentiate cholesteatoma from non cholesteatoma (control) CSOM on simple clinical grounds for its early detection and management. Methods: A series of 156 patients (aged 5-64-years of either sex) having atticoantral (unsafe) ear disease, including 94 patients with cholesteatoma CSOM and 62 patients of CSOM without cholesteatoma (controls) were inducted in the study. The clinical sign...

IMPORTANCE Several classifications of cholesteatoma exist, but there are controversies about their clinical application. OBJECTIVE To classify cholesteatomas and describe the prevalence of the subtypes. DESIGN, SETTING, AND PARTICIPANTS A cross-sectional comparative study of 414 ears in 356 consecutive patients with middle ear cholesteatoma and no history of ear surgery treated at a tertiar...

Introduction: Chronic otitis media (COM) has been broadly classified into mucosal and squamous subtypes. COM types are associated with erosion of the ossicular chain. The aim of the present study was to correlate the type of COM, the site of perforation/retraction, and the type of disease pathology with the pattern and degree of ossicular chain necrosis.   Materials and Methods: A prospecti...

Background and Objectives: The diagnosis of cholesteatoma is usually clinic, the only efficient treatment surgical. High-resolution computed tomography (HRCT) not considered absolutely necessary for management an uncomplicated cholesteatoma, but unsuspected situations from a clinical point view can be discovered using scans, warning surgeon. Our objective to compare HRCT scan information with i...