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A solitary fibrofolliculoma on the concha of the ear

A solitary fibrofolliculoma on the concha of the ear Editor, Fibrofolliculomas are multiple, asymptomatic, yellowish to flesh-colored, smooth, dome-shaped papules measuring 2–4 mm in diameter, usually located on the face. Fibrofolliculoma very rarely presents as a solitary lesion. We describe an unusual case of a solitary fibrofolliculoma located on the concha of the ear in a 45-year-old man. A 45-year-old man presented with a solitary, asymptomatic, flesh-colored mass on the concha of the left ear. The mass had not changed in size for three years. The subject had no other significant skin lesions, his medical and family histories were unremarkable, and he had experienced no triggering trauma. On cutaneous examination, the protruding mass was found to measure 12 · 10 · 8 mm (Fig. 1). It had a smooth surface with a rubbery consistency. Palpation of the lesion did not elicit pain. A shave biopsy was performed. Histologic examination of the lesion showed a well-defined tumor mass involving a hair follicle and a proliferation of multiple thin strands of basaloid cells extending from the central follicle into the surrounding fibrous stroma (Fig. 2a). The fibrous stroma contrasted sharply with the surrounding dermis (Fig. 2b). Alcian blue stains showed mucin content in the stroma. The histologic findings were characteristic of fibrofolliculoma. In the four months since the shave