Infundibulomatosis

In 1961, Mehregan and Butler¹described an organoid tumor related to the follicular infundibulum. Most frequently, the lesions are single,²but multiple lesions have been reported.³We describe a patient who had numerous lesions concentrated in a mantle distribution on the upper part of the torso. We found that a distinctive elastic network outlined the tumors histologically. This characteristic may provide a means of differentiating this tumor from other hamartomas.

Report of a Case

A 29-year-old man, who was referred to us in January 1981, had had a four-year history of asymptomatic lesions resembling small irregular scars that had progressively increased in number on the upper part of his trunk. There was no family history of this disorder. The lesions were more obvious in the summer due to their relatively pale color and the patient's tanning. Examination of the skin showed numerous irregular, angulated, oval, white to