A Case of Solitary Myofibroma In Adult / 대한피부과학회지

Solitary myofibroma is a recently described, benign neoplasm of superficial soft tissue, which represents the adult counterpart of infantile myofibromatosis. In Korean literature, only one case has been reported, and we report an additional case of solitary myofibroma in a 57-year-old man. He presented with 2-month history of asymptomatic slightly elevated pale-skin-colored nodule occurring on the right side of philtrum. A histopathologic examination revealed diffuse proliferation of fibroblasts and spindle cells with a whorled arrangement and grouped fascicles. The tumor cells were positively stained for vimentin and smooth muscle actin.