ABSTRACT
INTRODUCTION: Solitary ovarian plasmacytoma is a rare form of extramedullary plasmacytic tumor that develops outside the bone marrow. PRESENTATION OF CASE: We report the case of a 52-year-old female patient who consulted for pelvic pain and abdominal distension. Clinical examination revealed an abdominopelvic mass and a pelvic MRI confirmed a right ovarian mass. The diagnosis of ovarian plasmacytoma was made after exploratory laparotomy. DISCUSSION: Extramedullary plasmacytoma (EMP) is rare and most often found in the upper aerodigestive tract, ovarian localization is exceptional. Histological and immunohistochemical features of EMP highlights similarities with multiple myeloma. EMP treatment options are discussed, including radiotherapy, surgery, and chemotherapy. The prognosis of EMP depends on several factors, including tumor size and timing of treatment. CONCLUSION: Solitary ovarian plasmacytoma is a rare but important entity to consider in the diagnosis of abdominopelvic masses. Appropriate treatment, such as surgery combined with radiotherapy, can be effective, although regular monitoring is necessary due to the risk of relapse and transformation into multiple myeloma.
