Pilar sheath acanthoma

Pilar Sheath Acanthoma (pronunciation: pilar sheath a-kan-tho-ma) is a rare, benign cutaneous condition characterized by a solitary, firm, skin-colored papule that typically occurs on the face of elderly individuals.

Etymology

The term "Pilar Sheath Acanthoma" is derived from the Latin word "pilaris" meaning "of the hair", "sheath" referring to the protective casing, and "acanthoma" from the Greek words "akantha" meaning "thorn" and "-oma" meaning "tumor".

Clinical Presentation

Pilar Sheath Acanthoma presents as a solitary, firm, skin-colored papule, usually located on the face, particularly the lower lip, of elderly individuals. The lesion is typically asymptomatic, but can sometimes cause mild discomfort or cosmetic concern.

Histopathology

Histologically, Pilar Sheath Acanthoma is characterized by an invagination of the epidermis into the dermis, lined by an acanthotic epidermis and filled with keratinous material. The lesion is surrounded by a well-defined, thickened hair follicle sheath, which gives the condition its name.

Diagnosis

Diagnosis of Pilar Sheath Acanthoma is primarily based on clinical examination and histopathological findings. Dermoscopy and skin biopsy may be used to confirm the diagnosis and rule out other conditions.

Treatment

Treatment of Pilar Sheath Acanthoma is usually not necessary, as the condition is benign and asymptomatic. However, if the lesion causes discomfort or cosmetic concern, it can be removed surgically.

Related Terms

• Acanthoma
• Cutaneous condition
• Dermoscopy
• Epidermis
• Hair follicle
• Skin biopsy

External links

• Medical encyclopedia article on Pilar sheath acanthoma
• Wikipedia's article - Pilar sheath acanthoma

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