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Anatomy of the Ear

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...

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Related Experiment Video

Updated: Aug 20, 2025

Surgical Treatment of an Endolymphatic Sac Tumor

Surgical Treatment of an Endolymphatic Sac Tumor

Published on: May 26, 2023

[Neuroendocrine adenoma middle ear].

A I Kryukov^1,2, E V Garov^1,2, V N Zelenkova¹

¹L.I. Sverzhevskiy Research Institute of Clinical Otorhinolaryngology, Moscow, Russia.

Vestnik Otorinolaringologii

|November 21, 2022

Summary

Neuroendocrine adenoma (NEA) is a rare middle ear tumor. Early diagnosis via advanced imaging and histological confirmation, followed by surgical intervention, is key for successful treatment and improved hearing.

Keywords:

classification diagnosis neuroendocrine adenomas of the middle ear surgical treatment

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Area of Science:

Otolaryngology
Pathology
Oncology

Context:

Neuroendocrine adenoma (NEA) is an exceptionally rare tumor, comprising less than 2% of all ear neoplasms.
Middle ear NEAs present diagnostic and therapeutic challenges due to their rarity.

Purpose:

To provide a comprehensive overview of the diagnosis, classification, treatment, and monitoring of middle ear NEA.
To present a case series of six middle ear NEA patients treated at a specialized center.

Summary:

Diagnosis relies on high-resolution CT and MRI with contrast, but definitive verification requires histological examination and immunophenotyping.
Differential diagnosis from other middle ear pathologies is crucial at all diagnostic stages.
Surgical treatment, tailored to tumor size, aims for complete resection and auditory function improvement.

Impact:

This overview aids clinicians in managing rare middle ear NEAs.
Highlights the importance of advanced imaging and histological confirmation for accurate diagnosis.
Emphasizes surgical management for optimal patient outcomes, including hearing restoration.