Eruptive infundibulomas. A distinctive presentation of the tumor of follicular infundibulum.

Hundreds of asymptomatic pale erythematous lesions, 2 to 15 mm in diameter, with complex angulated shapes in a mantle distribution over the upper portion of the chest and back and the shoulders, developed in two unrelated young men. Actinic porokeratosis, discoid lupus erythematosus, pityriasis versicolor, and acne scars were considered as possible diagnoses, but none of these appeared appropriate. Multiple skin biopsy specimens from both patients showed tumors of follicular infundibulum (infundibulomas), benign platelike proliferations of the external root sheath that were outlined by a prominent brushlike elastic network.

Cutis marmorata telangiectatica congenita.

Cutis marmorata telangiectatica congenita (CMTC) is a rare condition. Less than 60 cases have been reported. We saw four patients who were born in Sydney, Australia, between April 1978 and September 1979.