Utility of a multidisciplinary team approach with transanal total mesorectal excision for resection of a large pelvic solitary fibrous tumor.

INTRODUCTION:Solitary fibrous tumors require complete surgical resection to avoid recurrence. Large solitary fibrous pelvic tumors are difficult to resect completely with conventional surgical methods. We herein report a case in which a joint surgical approach was required for resection due to the location and size of tumor. CASE PRESENTATION:A 45-year-old man had a large solitary fibrous tumor in the pelvis, which extended into the left obturator foramen. The patient underwent tumor resection with vesico-prostatectomy, transanal total mesorectal excision, and opening of the foramen obturatum. The tumor was grossly resected completely. No recurrence was noted nine months after surgery. CONCLUSION:A multidisciplinary team approach with transanal total mesorectal excision may provide complete resect of large pelvic solitary fibrous tumors.