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Related Concept Videos

The Auditory Ossicles01:11

The Auditory Ossicles

The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
Anatomy of the Ear01:16

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...
Compact Bone01:27

Compact Bone

Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...
Bone Cells and Tissue01:30

Bone Cells and Tissue

Bones contain a relatively small number of cells entrenched in a matrix of organic and inorganic components. Although bone cells compose only a small amount of the bone volume, they are crucial to its function. Four types of cells are found within the bone tissue— osteoblasts, osteocytes, osteogenic cells, and osteoclasts.
Osteoblasts and Osteocytes
The osteoblast is the bone cell responsible for forming new bone tissue. It is found in the growing portions of bone, including the periosteum and...
Spongy Bone01:09

Spongy Bone

All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
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Related Experiment Video

Updated: May 19, 2026

Endaural Endoscopic Atticoantrotomy (Retrograde Mastoidectomy) using a Constant Suction Bone-drilling Technique
07:06

Endaural Endoscopic Atticoantrotomy (Retrograde Mastoidectomy) using a Constant Suction Bone-drilling Technique

Published on: May 23, 2021

Multiple osteomas in middle ear.

Yongxin Li1, Qiuhuan Li, Shusheng Gong

  • 1Department of Otolaryngology, Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, 1Dongjiao Minxiang, Beijing 100730, China.

Case Reports in Otolaryngology
|August 29, 2012
PubMed
Summary

This study details a rare case of multiple middle ear osteomas, successfully treated with type III tympanoplasty. The findings contribute to understanding these uncommon benign bone tumors.

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Last Updated: May 19, 2026

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Dissection of the Auditory Bulla in Postnatal Mice: Isolation of the Middle Ear Bones and Histological Analysis
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Published on: January 4, 2017

Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Pathology

Background:

  • Middle ear osteomas are rare benign bone tumors.
  • Few cases of multiple middle ear osteomas have been reported in English literature.
  • This report describes a unique case with multiple osteomas in specific middle ear locations.

Purpose of the Study:

  • To report a rare case of multiple middle ear osteomas.
  • To describe the surgical management and outcome.
  • To add to the limited literature on this condition.

Main Methods:

  • Surgical removal of multiple osteomas using type III tympanoplasty.
  • Intraoperative findings and postoperative assessment.

Main Results:

  • Multiple osteomas were identified arising from the promontory, incus, Eustachian tube, and tensor tympani muscle.
  • The patient also had chronic otitis media in the same ear.
  • Successful one-stage removal of osteomas was achieved via type III tympanoplasty.

Conclusions:

  • Multiple middle ear osteomas can occur in various locations.
  • Type III tympanoplasty is an effective surgical approach for their removal.
  • Early diagnosis and surgical intervention are crucial for favorable outcomes.