A cyst containing some cholesterol found in the middle ear and also in the brain.
A benign, slow-growing mass in the middle ear composed of squamous epithelium and cholesterol deposits that eventually destroys the bones of the middle ear as it invades the mastoid air cells; caused by otitis media.
A benign mass or tumorlike growth formed by an accumulation of dead cells in the middle ear and/or mastoid (the prominent bone behind the ear). The condition is caused by repeated or chronic middle ear infections and inflammation and is usually associated with poor eustachian tube function. Cholesteatomas are formed when the skin of the eardrum grows into the middle ear. This skin forms a ball-shaped pocket that fills up with dead cells shed by the eardrum. The pocket erodes the bone that lines the middle ear cavity, often damages the delicate bones of hearing in the middle ear, and may become infected.
A mass consisting mainly of cellular debris in which cholesterol crystals may be demonstrated. Cholesteatomas occur mainly in the middle ear and, by pressure, cause destruction of surrounding structures. They may also occur in other parts of the skull and nervous- system.
An epithelial pocket or cystlike sac filled with keratin debris. It can occur in the meninges, central nervous system, and skull, but is most common in the middle ear and mastoid area. The cyst, which is filled with a combination of epithelial cells and cholesterol, most commonly enlarges to occlude the middle ear. Enzymes formed within the sac cause erosion of adjacent bones, including the ossicles, and destroy them. Cholesteatomas are classified as congenital, primary acquired, and secondary acquired. They are common causes of conductive hearing loss and can be treated surgically.
Within the middle ear, a fluid-filled sac formed by an accumulation of cells manifests as a cystic mass. This anomaly can arise as a congenital defect or as a severe complication resulting from various ear-related diseases or traumatic conditions.
Cholesteatoma is an uncommon yet serious condition characterized by the inward growth of skin cells from the ear canal into the middle ear. Typically, it arises due to a chronic middle ear infection known as otitis media, coupled with a perforation in the eardrum. If left unattended, it has the potential to expand and cause harm to the delicate bones within the middle ear and the surrounding structures.
Surgical intervention is necessary to remove cholesteatoma, either through the eardrum or by performing a mastoidectomy, which involves the extraction of the cholesteatoma along with the mastoid bone situated behind the ear.
A tumor that develops in the ear due to persistent middle ear disease and continuous purulent discharges.
An uncommon type of brain tumor that originates from residual embryonic cells and may also manifest in the spinal cord. It is also referred to as a “pearly tumor.”