Abstract

Introduction:  The  differential  diagnosis  of  female  pelvic  tumors  is  broad  and  most frequently arises from the reproductive organs. This paper reports an uncommon benign pelvic tumor of mesenquimal origin.

Case  report:  A  71-year-old  woman  with  cellulitis  at  the  right  gluteal  region  underwent  transvaginal  pelvic  ultrasound,  which  showed  a  large  solid  and  cystic  pelvic  tumor.  Diagnostic  investigation  through  magnetic  resonance  imaging  played  a  fundamental  role  in  determining  the  origin  of  the  lesion  in  the  right  ischiorectal  fossa.  Histopathological  and immunohistochemical studies of the specimen defined a benign genital stromal tumor: angiomyofibroblastoma.

Conclusion:  Defining  the  origin  of  pelvic  lesions  at  imaging  exams  and,  mainly, histopathological  analysis  is  decisive  to  make  the  correct  diagnosis.  Although  vulva  and  vagina are the most common sites of angiomyofibroblastoma, this neoplasm can rarely occur in the pelvic and extrapelvic tissues.

Keywords

pelvic tumors, pelvis neoplasms, pelvic cancer