title: Aggressive angiomyxoma: case report and review of the literature.
abstract: A 47-year-old female presented to clinic with a 5-year history of a left buttock mass. The patient's hemoglobin was low (9.7 g/dL); laboratory analysis was otherwise unremarkable. Ultrasound of the left gluteal region demonstrated a heterogeneous vascular solid lesion. Magnetic resonance and computed tomography imaging showed an enhancing mass extending from the left ischioanal fossa through the levator ani muscle into the pelvis. Biopsy revealed bland-appearing spindle-shaped cells positive for estrogen and progesterone receptors, consistent with an aggressive angiomyxoma. The mass was surgically excised without complication. To date, follow-up imaging has not demonstrated evidence of tumor recurrence.
authors.affiliation: Department of Radiology, University of Minnesota Medical Center, MMC 292, B-212 Mayo, 420 Delaware Street SE, Minneapolis, MN 55455, USA.
authors.forename: John C
authors.initials: JC
authors.lastname: Benson
authors.affiliation: Department of Laboratory Medicine & Pathology, University of Minnesota Medical Center, Minneapolis, MN, USA.
authors.forename: Scott
authors.initials: S
authors.lastname: Gilles
authors.affiliation: Department of Radiology, University of Minnesota Medical Center, MMC 292, B-212 Mayo, 420 Delaware Street SE, Minneapolis, MN 55455, USA.
authors.forename: Tina
authors.initials: T
authors.lastname: Sanghvi
authors.affiliation: Department of Radiology, University of Minnesota Medical Center, MMC 292, B-212 Mayo, 420 Delaware Street SE, Minneapolis, MN 55455, USA.
authors.forename: James
authors.initials: J
authors.lastname: Boyum
authors.affiliation: Department of Radiology, University of Minnesota Medical Center, MMC 292, B-212 Mayo, 420 Delaware Street SE, Minneapolis, MN 55455, USA.
authors.forename: Eric
authors.initials: E
authors.lastname: Niendorf
keywords: Aggressive angiomyxoma; Pelvis