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  • Title: Surgical therapy for gastrointestinal stromal tumours of the upper gastrointestinal tract.
    Author: Das A, Wilson R, Biankin AV, Merrett ND.
    Journal: J Gastrointest Surg; 2009 Jul; 13(7):1220-5. PubMed ID: 19370382.
    Abstract:
    AIM: This study aimed to examine clinicopathological features and outcomes after primary resection of gastrointestinal stromal tumours (GIST) of the upper gastrointestinal tract METHOD: Fifty consecutive patients were identified as having a mesenchymal tumour of the upper gastrointestinal tract resected at our institution, of which 47 were GISTs. The influence of clinicopathological variables on disease-free survival was evaluated using Kaplan-Meier estimates and Cox hazard model. RESULTS: The median age was 62.8 (21.3-94.7). The commonest presenting symptoms were anaemia (43%) and pain (34%). Tumours were located in the stomach (64%), small bowel (34%) and oesophagus (2%). Median follow-up was 20.4 (2-106) months. Fletcher low/intermediate-risk tumours had a significantly better (p = 0.0008) 2- and 5-year actuarial survival of 100% compared with 88% and 58% for high-risk group. Recurrence-free survival at 2 and 5 years was 100% for low/intermediate-risk group compared with 68% and 45% for the high-risk group (p = 0.0008). Univariate analysis of predictors of recurrence identified male sex, high mitotic rate and tumour size as significant. Multivariate analysis showed high mitotic rate as the only poor prognosticator (Hazard ratio = 16.7, p = 0.02). CONCLUSION: Surgical excision of low- and intermediate-grade GIST has an excellent prognosis. Surgery remains the mainstay of treatments, and high-grade tumours carry a significantly worse prognosis. High mitotic rates are an independent poor prognosticator.
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