Subungual exostosis
Subungual Exostosis
Subungual exostosis (pronunciation: suh-buhn-gwuhl ek-soh-stoh-sis) is a benign bone tumor that occurs under the nail. It is most commonly found on the toes, particularly the big toe.
Etymology
The term "subungual" is derived from the Latin words "sub" meaning under, and "unguis" meaning nail. "Exostosis" comes from the Greek words "ex" meaning out, and "osteon" meaning bone. Thus, "subungual exostosis" literally translates to "bone outgrowth under the nail."
Description
Subungual exostosis is characterized by a hard, bony protrusion under the nail. This can cause the nail to lift, leading to pain and discomfort. The condition is often misdiagnosed as an ingrown toenail due to the similar symptoms.
Causes
The exact cause of subungual exostosis is unknown. However, it is often associated with trauma or chronic irritation to the nail bed. Some studies suggest a possible genetic component.
Diagnosis
Diagnosis of subungual exostosis is typically made through a combination of physical examination and imaging tests, such as X-rays. A biopsy may also be performed to rule out other conditions, such as osteochondroma or enchondroma.
Treatment
Treatment for subungual exostosis usually involves surgical removal of the bony growth. This is typically performed under local anesthesia. Following surgery, the nail is often able to regrow normally.
Related Terms
- Osteoma: A benign bone tumor.
- Exostosis: A benign outgrowth of bone.
- Onycholysis: Separation of the nail from the nail bed.
- Onychomycosis: Fungal infection of the nail.
External links
- Medical encyclopedia article on Subungual exostosis
- Wikipedia's article - Subungual exostosis
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