1.通常为先天性,好发于躯干和四肢近端的皮肤;
2.病变位于真皮内,可见散在分布、排列杂乱的增生性平滑肌束;
3.可与毛囊相连;
4.被覆表皮可伴有棘细胞增生和基底细胞色素沉着;
5、缺乏细胞多形性、核分裂和坏死。
1、皮肤平滑肌瘤:好发于成年人,呈小丘疹样至圆形小结节,细胞排列成编织状,细胞核长而两端钝圆。
2、普通型蓝痣:真皮深层境界不清的细长或树突状黑色素细胞增生。
1.Fernandez-Flores A et al: Combined cutaneous smooth muscle hamartoma and nevus flammeus. J Cutan Pathol. 41(7):612-6, 2014
2.Tzu J et al: Combined blue nevus-smooth muscle hamartoma: a series of 12 cases. J Cutan Pathol. 40(10):879-83, 2013
3.García-Gavín J et al: Multiple congenital familial smooth muscle hamartoma in two siblings. Dermatol Online J. 18(5):7, 2012
4.Holland KE et al: Generalized congenital smooth muscle hamartoma presenting with hypertrichosis, excess skin folds, and follicular dimpling. Pediatr Dermatol. 25(2):236-9, 2008
5.Zarineh A et al: Smooth muscle hamartoma associated with a congenital pattern melanocytic nevus, a case report and review of the literature. J Cutan Pathol. 35 Suppl 1:83-6, 2008