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Clinical, Radiologic, and Endoscopic Manifestations of Small Bowel Malignancies: a First Report from Thailand

  • Tangkittikasem, Natthakan (Division of Gastroenterology, Department of Medicine, Siriraj Hospital, Mahidol University) ;
  • Boonyaarunnate, Thiraphon (Department of Pathology, Faculty of Medicine, Siriraj Hospital, Mahidol University) ;
  • Aswakul, Pitulak (Liver and Digestive Institute, Samitivej Sukhumvit Hospital) ;
  • Kachintorn, Udom (Division of Gastroenterology, Department of Medicine, Siriraj Hospital, Mahidol University) ;
  • Prachayakul, Varayu (Division of Gastroenterology, Department of Medicine, Siriraj Hospital, Mahidol University)
  • Published : 2016.01.11

Abstract

Background: The symptoms of small bowel malignancies are mild and frequently nonspecific, thus patients are often not diagnosed until the disease is at an advanced stage. Moreover, the lack of sufficient studies and available data on small bowel cancer makes diagnosis difficult, further delaying proper treatment for these patients. In fact, only a small number of published studies exist, and there are no studies specific to Thailand. Radiologic and endoscopic studies and findings may allow physicians to better understand the disease, leading to earlier diagnosis and improved patient outcomes. Objective: To retrospectively analyze the clinical, radiologic, and endoscopic characteristics of small bowel cancer patients in Thailand's Siriraj Hospital. Materials and Methods: This retrospective analysis included 185 adult patients (97 men, 88 women; mean age = $57.6{\pm}14.9$) with pathologically confirmed small bowel cancer diagnosed between January 2006 and December 2013. Clinical, radiologic, and endoscopic findings were collected and compared between each subtype of small bowel cancer. Results: Of the 185 patients analyzed, gastrointestinal stromal tumor (GIST) was the most common diagnosis (39.5%, n=73). Adenocarcinoma was the second most common (25.9%, n = 48), while lymphoma and all other types were identified in 24.3% (n = 45) and 10.3% (n = 19) of cases, respectively. The most common symptoms were weight loss (43.2%), abdominal pain (38.4%), and upper gastrointestinal bleeding (23.8%). Conclusions: Based on radiology and endoscopy, this study revealed upper gastrointestinal bleeding, an intra-abdominal mass, and a sub-epithelial mass as common symptoms of GIST. Obstruction and ulcerating/circumferential masses were findicative of adenocarcinoma, as revealed by radiology and endoscopy, respectively. Finally, no specific symptoms were related to lymphoma.

Keywords

Small bowel cancer;GIST;adenocarcinoma;lymphoma;metastasis;radiologic manifestation

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