Abstract
A case of a solitary fibrous tumor (SFT) of the perianal region in a 62-year-old man is reported herein. The patient had undergone an abdominoperineal excision of the rectum for an anorectal tumor 13 years previously, and had been referred to our hospital for a perineal mass. Computerized tomography and angiography revealed a markedly hypervascular tumor measuring 11×8 cm in size in the pelvic cavity. After preoperative radiotherapy (total 58 Gy) and the embolization of the feeding arteries, he underwent an en bloc excision of the tumor. Microscopically, the tumor was composed of spindle shaped cells with a “patternless” arrangement in a collagenous background. There was immunohistochemical evidence that these cells were strongly positive for CD34, thus suggesting the tumor to be SFT. The previously resected anorectal tumor showed similar histological and immunohistochemical findings. The patient’s recovery was uneventful.
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Yoshida, R., Takada, H., Iwamoto, S. et al. A solitary fibrous tumor in the perianal region with a 13-year follow-up: Report of a case. Surg Today 29, 642–645 (1999). https://doi.org/10.1007/BF02482992
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DOI: https://doi.org/10.1007/BF02482992