1Martin-Martinez JC,Lopez-Aramburu MA,Pacheco R. Fibrosarcoma of the penis. Actas Urol Esp, 1998,22:766.
2Antonescu CR, Rosenblum MK, Pereira P, et al. Sclerosing epithelioid fibrosarcoma: a study of 16 cases and confirmation of a clinicopathologically distinct tumor. Am J Surg Pathol,2001,25:699.
3Mentzel T, Calonje E, Wadden C, et al. Myxofibrosarcoma. Clinicolpathologic analysis of 75 cases with emphasis on the low-grade variant. Am J Surg Pathol, 1996,20: 391.