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Dermatopathology

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Symplastic Leiomyoma

Cutaneous leiomyomas are benign mostly solitary smooth muscle tumors occurring over a wide age range (33-92 years) in both men and women. The lesions can vary in size from 0.5 to >4 cm and appear as papules or plaques on the chest, back and extremities. They may infrequently display cytologic atypia similar to symplastic leiomyomas of the uterus. These atypical/symplastic leiomyomas feature increased cellularity, nuclear atypia, pleomorphism and rare or no mitoses. Reference: Cook et al. Atypical pilar leiomyomatosis: an unusual presentation of multiple atypical cutaneous leiomyomas. J Cutan Pathol 2013: 40: 564-568.

Weill Cornell Medicine Dermatopathology 1300 York Avenue
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New York, NY 10065 Phone: (212) 746-6434