Related Experiment Video
Updated: Aug 16, 2026

Surgical Treatment of an Endolymphatic Sac Tumor
Published on: May 26, 2023
Mesotympanic sarcoidosis
1Department of Otolaryngology, Guy's & St Thomas' Hospital NHS Trust, London, UK. rasmayi2000@yahoo.co.uk
Abstract:
Sarcoidosis often presents with signs and symptoms within the head and neck. In this region, it most commonly affects the nose, larynx, parotid and cervical lymph nodes. Within the ear, it usually causes sensorineural hearing loss of varying severity. We report a patient in whom sarcoidosis involved the middle ear and presented with a conductive hearing loss. Granulomata were found in the middle ear during an exploratory tympanotomy. The granulomatous process had caused necrosis of the long process of incus and was also encasing the chorda tympani nerve. Histological examination confirmed the diagnosis.
More Related Videos
Related Concept Videos
Anatomy of the Ear
Mitral Stenosis I: Introduction
Cryptococcal Meningitis
Cirrhosis I: Introduction
Mitral Stenosis II: Clinical features and Diagnostic Tests
Cranial Bones: Lateral View
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
