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J Korean Soc Radiol. 2019 Jan;80(1):122-128. English. Case Report. https://doi.org/10.3348/jksr.2019.80.1.122
Han YE , Chae SY , Lee JH , Park BJ , Sung DJ , Han NY , Sim KC , Kim MJ .
Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea. dr.minjukim@gmail.com
Department of Pathology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.
Abstract

Gastrointestinal tract involvement in undifferentiated pleomorphic sarcoma (UPS) is extremely rare. To the authors' knowledge, only 21 cases of primary small bowel UPS have been reported in the literature available in English. Reported CT findings in primary small bowel UPS have been nonspecific, and MRI findings have been reported in only one case. The present article describes a case involving a 72-year-old male with histologically confirmed primary UPS arising from the ileum, focusing on both CT and magnetic resonance enterography findings. On CT, primary small bowel UPS was noted as a heterogeneously enhanced small bowel mass without obstruction. Magnetic resonance enterography revealed heterogeneous intermediate T1 and T2 signal intensity, with hemorrhagic or necrotic foci within the mass and heterogeneous enhancement. The differential diagnosis included malignant gastrointestinal tumor; however, the prognosis of UPS is worse, with higher incidences of extra-abdominal metastasis.

Copyright © 2019. Korean Association of Medical Journal Editors.