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HOME > J Pathol Transl Med > Volume 30(7); 1996 > Article
Case Report Myofibroblastoma of the Male Breast: Report of a case.
Ji Eun Kim, Yeon Lim Suh, Howe Jung Ree
Journal of Pathology and Translational Medicine 1996;30(7):623-629
DOI: https://doi.org/
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1Department of Pathology, Seoul National University College of Medicine, Seoul, Korea.
2Department of Diagnostic Pathology, Samsung Medical Center, Seoul, Korea.

A case of myofibroblastoma of the breast in a 55-year-old man is described. Myofibroblastoma is a relatively recently recognized benign stromal tumor, and predominantly occurs in middle aged men. The pateint presented with a nontender firm mass in his right breast. Fine needle aspiration biopsy revealed bland looking stromal cell clusters without epithelial cells. Simple excision was done and the patient discharged uneventfully. The mass was well demarcated, lobulated and sligtly myxoid. Microscopically bipolar elongated spindle cell fascicles with interspersing broad collagen bands are so characteristic. Ultrastructurally the tumor cell show features of fibroblast as well as smooth muscle cell.

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