Related Experiment Video
Updated: Aug 12, 2026

The Microscopic Transcanal Approach in Stapes Surgery Revisited
Published on: February 16, 2022
The pathogenesis and treatment of cholesteatoma
1Department of Otolaryngology, University of Helsinki, Finland.
Abstract:
Congenital cholesteatoma, which arises from embryonic epidermoid tissue, is rare. In the majority of cases the cholesteatoma is acquired. It may develop as a retraction pocket involving the whole membrane, as a result of migration over the perforation edges or as basal cell invasion behind an intact membrane. There is no evidence for a metaplastic process or a Langerhans' cell mediated origin. Treatment modalities include several methods of either conservative or radical surgery, the main aim being one-stage total eradication of cholesteatoma and simultaneous reconstruction. With appropriate surgical methods recurrence figures after 5 years should remain under 10%. The patient's own tissues are the material of choice in the reconstruction.
Related Concept Videos
Chronic Bowel Disorders: Introduction
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
Trachea
Anatomical Features:
Location: About half of the trachea is situated in the neck, anterior to the esophagus, and extends from the larynx (at the level of the...
Esophageal Perforation-II: Clinical Manifestations and Management
Clinical Manifestations:
Chronic Pancreatitis II: Collaborative Care
Assessment:
Brain Abscess l: Introduction
Cholecystitis

