Cholesteatoma
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Classification of cholesteatomas
There are two types of middle ear cholesteatoma:
- Innate (true)
- Purchased (false)
True cholesteatoma, also called “pearl tumor”, has the appearance of a smooth capsule and is formed during embryonic development. Cholesteatoma is most often localized in the temporal bone, but can also be found in other parts of the skull, including the brain.
False cholesteatomas develop against the background of prolonged inflammatory processes in the ear or after injury. Their formation is due to two mechanisms:
- The first, associated with the penetration of the epithelium of the external auditory canal into the middle ear through defects of the eardrum
- Second. Activated when there are problems with the Eustachian tube, leading to a decrease in pressure in the tympanic cavity, subsequent absorption and accumulation of keratin in the membrane
These processes contribute to the accumulation of dead cells and the formation of pseudotumor.
Symptoms of cholesteatoma
At an early stage, cholesteatoma usually does not cause concern to patients and is detected incidentally during examination. As cholesteatoma increases in size, discomfort and pressure on surrounding tissues and organs increase.
Other symptoms of holistoma include:
- Headaches and dizziness
- Insomnia
- Deterioration of vision
- Constant pain in the ear area
- Purulent discharge from the ear
- Unilateral hearing loss
Hearing loss can range from subtle to significant. Usually it is of a mixed nature due to the effect on the hearing aid.
General information about the treatment of cholesteatoma
Complications of cholesteatoma
Cholesteatoma in the ear contributes to the gradual destruction of nearby bones. It gradually expands, occupying space in the cells of the mastoid process, reaches the inner ear, destroys the labyrinth and promotes the formation of fistulas. When the cortex of the mastoid process is affected, the tumor penetrates the skin. Destruction of the bony canal of the facial nerve leads to its paresis, and damage to the sigmoid sinus causes thrombosis.
Important! As a result, the tumor reaches a significant size, forming a large cavity with processes. Outwardly, it resembles the space left after surgery.
Old formations contain cysts with toxic fluid, the rupture of which can cause aseptic meningitis or meningoencephalitis. These diseases pose a serious threat to life due to swelling of the brain.
Inflammation associated with chronic otitis is often aggravated by purulent decay of the tumor, which leads to the development of purulent labyrinthitis, meningitis, brain abscess, and otogenic sepsis.
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What is ear cholesteatoma and the mechanisms of its development
Cholesteatoma is an encapsulated neoplasm that occurs in the epithelial layers of the middle ear. In 90% of cases, its appearance is associated with chronic purulent otitis. According to statistics, such a complication occurs in 0.01% of patients with this disease.
Other reasons for the formation of cholesteatomas include:
At risk are mainly children over 10 years old, as well as young people aged 20-30 years. The younger the patient, the more rapidly the disease progresses and causes frequent relapses.