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Biomedical subjects
Publications and source records attributed to M W Levin.
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Four neonates had solitary, congenital, rapidly growing, spontaneously ulcerating tumors of the face, trunk, and extremities. No extracutaneous involvement was found, and all lesions spontaneously involuted. Mononuclear cells of the cutaneous infiltrate were Langerhans' cells. These findings expand the spectrum of congenital self-healing reticulohistiocytosis.
Smooth muscle hamartoma is a rare congenital cutaneous hyperplasia of the arrectores pilorum muscles. Clinically it may mimic a solitary mastocytoma or congenital nevocellular nevus. The pattern histopathologically is distinct from all other benign muscle tumors of the skin and is mimicked only by the smooth muscle hyperplasia present in Becker's nevus.