Clin Endosc > Epub ahead of print
A Large and Pedunculated Inflammatory Pseudotumor with Pseudosarcomatous Change of the Cecum Mimicking a Malignant Polyp: A Case Report and Literature Review
Jong Suk Oh , Hyung Wook Kim , Su Bum Park , Dae Hwan Kang , Cheol Woong Choi , Su Jin Kim , Hyeong Seok Nam , Dae Gon Ryu
Department of Internal Medicine, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
Correspondence :  Hyung Wook Kim ,Tel: +82-55-360-1535, Fax: +82-55-360-1536, Email:
Received: February 24, 2021  Revised: March 31, 2021   Accepted: April 5, 2021
Inflammatory pseudotumor (IPT) is a rare benign tumor of unknown etiology that can occur in almost any organ system. It has neoplastic features such as local recurrence, invasive growth, and vascular invasion, leading to the possibility of malignant sarcomatous changes. The clinical presentations of colonic IPT may include abdominal pain, anemia, a palpable mass, and intestinal obstruction. A few cases of colonic IPT have been reported, but colonic IPT with pedunculated morphology is very rare. Furthermore, since it can mimic malignant polyps, understanding the endoscopic findings of colonic IPT is important for proper treatment. Herein, we present a case of colonic IPT with pseudosarcomatous changes, presenting as a large polyp, mimicking a malignant polyp in the cecum, along with a literature review.
Key Words: Cecum; Inflammatory pseudotumor; Pedunculated polyp
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