Uterine smooth muscle tumors of uncertain malignant potential (STUMP): management, follow up and prognosis

Abstract

Smooth muscle tumor of uncertain malignant potential (STUMP) encompasses a broad group of uterine neoplasms that do not meet the current histologic criteria for a diagnosis of either benign or a malignant tumor. We made a retrospective review of patients´s folders with the histological diagnosis of STUMP in our department so that to describe the clinical and imagery features and assess the prognosis after surgery. We recorded 4 cases from 2016 to 2019. Patients were between 31 and 55 years old. The mean age of patients was 42.7 years and most of patients presented abdomino pelvic pain and uterine abnormal bleeding evolving at least more than 3 months. The clinical exam was not particular. Three patients benefited of pelvic ultrasound which described most of the time the aspect of uterine myoma. The MRI was performed for 3 patients also and showed an endometrial process infiltrating the myometrial wall for 2 patients. All of them underwent total hysterectomy and the histology described the aspect compatible with STUMP sometimes associated with uterine myomas or polyp. The first two years follow up did not find any recurrence and the prognostic seems to be good. The goal of this study is to describe the management and to assess the prognosis of patients diagnosed with STUMP in our department.

Keywords

• stump
• management
• follow up
• prognosis