Synchronous colorectal adenocarcinoma and gastrointestinal stromal tumor in Meckel's diverticulum; an unusual association

• Main Authors: Masmanidou Maria, Tzeveleki Ioanna, Grigoriou Marios, Baka Sofia, Anthimidis George, Levva Sofia, Efthimiadis Christopher, Kosmidis Christopher, Zaramboukas Thomas, Basdanis Georgios
• Format: Article
• Language: English
• Published: BMC 2009-03-01
• Series: World Journal of Surgical Oncology
• Online Access: http://www.wjso.com/content/7/1/33

<p>Abstract</p> <p>Background</p> <p>Coexistence of gastrointestinal stromal tumor with synchronous or metachronous colorectal cancer represents a phenomenon with increasing number of relative reports in the last 5 years. Synchronous occurence of GISTs with other gastrointestinal tumors of different histogenesis presents a special interest. We herein report a case of GIST in Meckel's diverticulum synchronous with colorectal adenocarcinoma.</p> <p>Case presentation</p> <p>A 69 year old man, presented with abdominal distension and anal bleeding on defecation. Colonoscopy revealed colorectal cancer and a low anterior resection was performed, during which a tumor in Meckel's diverticulum was discovered. Histologic examination revealed GIST in Meckel's diverticulum and a rectosigmoid adenocarcinoma.</p> <p>Conclusion</p> <p>Whenever GIST is encountered, the surgeon should be alert to recognize a possible coexistent tumor with different histological origin. Correct diagnosis of synchronous tumors of different origin is the cornerstone of treatment.</p>