Trichodiscoma

Trichodiscoma is a benign skin tumor that originates from the hair follicle. It is a rare condition, often presenting as a solitary, small, skin-colored papule. Trichodiscomas are typically found on the face, but can occur anywhere on the body.

Clinical Presentation

Trichodiscoma usually presents as a solitary, small, skin-colored papule. The size of the lesion can range from a few millimeters to a centimeter in diameter. The most common location for trichodiscomas is the face, but they can occur anywhere on the body. The lesions are usually asymptomatic, but can occasionally cause mild discomfort or itching.

Pathogenesis

The exact cause of trichodiscomas is unknown. They are thought to originate from the hair follicle, specifically the hair disk, a specialized structure located at the base of the hair follicle. Trichodiscomas are not associated with any known risk factors or predisposing conditions.

Diagnosis

The diagnosis of trichodiscoma is typically made based on the clinical presentation and histopathological examination of the lesion. The histopathology of trichodiscomas shows a well-circumscribed dermal tumor composed of small, uniform cells with clear cytoplasm. The cells are arranged in cords and nests, and are surrounded by a fibrous stroma.

Treatment

Treatment for trichodiscomas is usually not necessary, as they are benign and do not cause any significant symptoms. However, if the lesion is bothersome or cosmetically unacceptable, it can be removed surgically. The prognosis after removal is excellent, with a very low risk of recurrence.

See Also

• Skin tumor
• Hair follicle
• Histopathology