BACKGROUND: The prognosis about duodenal GISTs is debatable. The purpose of this study is to compare the characteristics and the prognostic factors in patients with gastrointestinal stromal tumor (GIST) located in the duodenum with those located in the small intestine. METHODS: One hundred-one patients with GIST located in the duodenum (n = 40), or small intestine (n = 61) underwent resection between 1996 and 2010. We analyzed clinicopathologic features, surgical outcomes, and prognostic factors. RESULTS: Five-year survival rate in patients with GIST located in the duodenum and small intestine were 66.6 and 80.8%, respectively (p = 0.018). After survival analysis, high mitotic count and tumor rupture were identified as independent adverse prognostic factors. Advanced T stage and absence of adjuvant imatinib treatment were adverse prognostic factors with marginal statistical significance. The rate of progressive disease was significantly higher in patients with duodenal GISTs (36.8%) than in those with small intestinal GIST (29.6%) (p = 0.024). CONCLUSIONS: The clinicopathologic findings of duodenal GIST differ from those of small intestinal GIST. Patients with duodenal GIST have a worse prognosis than those with small intestinal GIST. Aggressive treatment including surgical resection should be considered for duodenal GIST, even if the risk is relatively low.
BACKGROUND: The prognosis about duodenal GISTs is debatable. The purpose of this study is to compare the characteristics and the prognostic factors in patients with gastrointestinal stromal tumor (GIST) located in the duodenum with those located in the small intestine. METHODS: One hundred-one patients with GIST located in the duodenum (n = 40), or small intestine (n = 61) underwent resection between 1996 and 2010. We analyzed clinicopathologic features, surgical outcomes, and prognostic factors. RESULTS: Five-year survival rate in patients with GIST located in the duodenum and small intestine were 66.6 and 80.8%, respectively (p = 0.018). After survival analysis, high mitotic count and tumor rupture were identified as independent adverse prognostic factors. Advanced T stage and absence of adjuvant imatinib treatment were adverse prognostic factors with marginal statistical significance. The rate of progressive disease was significantly higher in patients with duodenal GISTs (36.8%) than in those with small intestinal GIST (29.6%) (p = 0.024). CONCLUSIONS: The clinicopathologic findings of duodenal GIST differ from those of small intestinal GIST. Patients with duodenal GIST have a worse prognosis than those with small intestinal GIST. Aggressive treatment including surgical resection should be considered for duodenal GIST, even if the risk is relatively low.
Authors: Heikki Joensuu; Aki Vehtari; Jaakko Riihimäki; Toshirou Nishida; Sonja E Steigen; Peter Brabec; Lukas Plank; Bengt Nilsson; Claudia Cirilli; Chiara Braconi; Andrea Bordoni; Magnus K Magnusson; Zdenek Linke; Jozef Sufliarsky; Massimo Federico; Jon G Jonasson; Angelo Paolo Dei Tos; Piotr Rutkowski Journal: Lancet Oncol Date: 2011-12-06 Impact factor: 41.316
Authors: Marcelle R Cerski; Fernanda Pereira; Ursula S Matte; Francine H Oliveira; Felipe L Crusius; Luiz E Waengertner; Alessandro Osvaldt; Fernando Fornari; Luise Meurer Journal: Pathol Res Pract Date: 2011-10-24 Impact factor: 3.250