Paracolloid of the skin.

A 51-year-old Caucasian man presented with a yellowish lesion containing multiple protuberances over his right cheek. Light and electron microscopic examination revealed an anhistic substance lacking definite characteristics of either amyloid or collid milium. The term paracolloid degeneration of the skin is introduced to designate this substance which is believed to derive from collagen. A review of the literature showed similar cases previously published under the names of nodular amyloidosis or disseminated colloid.