Eruptive naevi: report of two cases, with enzyme histochemical, light and electron microscopical findings

Abstract

The cases of 2 young adults with widespread multiple eruptive nevi were described. In the 1st patient, more than 100 lesions appeared during a period of 6 mo. Young lesions were small flesh-colored telangiectatic papules; older lesions were larger and verrucose with histological features of cellular nevi. In the 2nd patient, a great number of lentigines developed in the course of 2 yr. Light microscopy and EM showed that giant melanosomes were present within the lesions. The plasma level of .beta.-MSH[melanocyte stimulating hormone]-like immuno-reactivity was normal.