Uterine smooth muscle tumors of uncertain malignant potential: a clinical case review

Uterine smooth muscle tumors of uncertain malignant potential (STUMP) are rare findings in routine clinical practice. STUMP are defined by The World Health Organization as tumors that cannot be histologically diagnosed as benign or malignant. We present the case of a 41-year-old woman who consulted for abdominal distension and pain. Imaging tests showed the presence of a large abdominal mass (20cm). The mass was surgically excised followed by hysterectomy. The histopathological diagnosis was uterine STUMP of lowgrade malignancy. The patient is currently asymptomatic. Conclusion: STUMP are rare. Pathological diagnosis is difficult and several studies describe immunohistochemical techniques that could help to confirm the final diagnosis. Some authors classify these tumors by their histological features, which are then used to establish their behavior and prognosis. The surgical treatment of choice has not been defined and close follow-up must be performed due to the risk of recurrence. (C) 2011 Elsevier Espana, S.L. All rights reserved.