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Objective: This study was designed to assess the prognostic value of lymph node ratio (LNR) in patients with nonmetastatic colorectal cancer treated with radical resection. Material and Methods: The characteristic and pathologic parameters of 280 patients operated on for nonmetastatic colorectal cancer at our service were recorded retrospectively. Patients were stratified into 4 groups according to the LNR quartiles of 1/12, 1/4, Y2 and 1. Distribution of demographic data and probability tables were made by ANOVA and Z tests. The cumulative survival ratios for LNR, N stage and TNM stage were calculated by the Kaplan Meier method and survival difference between groups were calculated by the log rank test. Results: There was a statistically significant correlation ratio between metastatic lymph node count and LNR. In 173 of all patients (61.8%) fewer than 12 lymph nodes were harvested. One hundred sixtysix (59.3%) patients were evaluated as NO, 79 (28.2%) were N1 and 35 (12.5%) were N2. The number of patients in 4 groups of LNR were 174 (62.1%), 72 (25.7%), 22 (7.9%) and 12 (4.3%) respectively. Five year survival ratios were 82,8% in LNRt, 69.4% in LNR2, 58.3% in LNR3 and 50% in LNR4. The difference for survival times and ratios between these groups were significantly difference (p=0.001). Conclusion: LNR may help physicians to decide the adequate treatment and estimate the prognosis in patients with inadequate lymphadenectomy. [ABSTRACT FROM AUTHOR]

Perforation is a rare but serious complication of a duodenal diverticulum and often presents itself with nonspecific symptoms and signs. Ectopic pancreatic tissue within a duodenal diverticulum is another rare situation. In this article, we report a case of an 87 year-old woman who presented with spontaneous perforation of the duodenal diverticulum. Operative resection and simple closure of the duodenum was performed. Ectopic pancreatic tissue was observed within the diverticulum at histological evaluation. [ABSTRACT FROM AUTHOR]