Colitis Cystica Profunda with Gastrointestinal Stromal Tumor: A Case Report

Backgroud: Colitis Cystica Profunda(CCP) is a rare benign medical condition and its exact etiology is still unknown. The clinical symptoms could be atypical and even asymptomatic, and also associated with several diseases. Most CCP patients may be misdiagnosed due to its complexity, and can be recognized after long-term medical treatment or surgical resection, especially in the elder or patients with relevant family history. Case presentation: In this case, a 58-year-old man presented with change in bowel habits for 3 years. Gastroscopy and colonoscopy were performed, and the lesions in stomach were resected. Colonoscopy revealed most lesions were significantly smaller after the resection of stomach neoplasm. Notably, these lesions recurred 3 years later. Conclusion: This case is an important reference for primary physician and pathologist to make correct diagnosis through initial endoscopic and pathological examination.