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  • Title: Probability of lymph node metastasis in small gastric cancer tumor: is it an indication for limited surgery?
    Author: Yokota T, Saito T, Teshima S, Yamada Y, Iwamoto K, Takahashi M, Kunii Y, Murata K, Ishiyama S, Yamauchi H.
    Journal: Int Surg; 2001; 86(4):206-9. PubMed ID: 12056462.
    Abstract:
    The purpose of this study was to determine the factors that are predictive of lymph node metastasis in a small gastric cancer tumor <2 cm in diameter. The clinicopathological features of 17 patients with node-positive small gastric cancer were reviewed from the database of gastric cancer at the Department of Surgery, Sendai National Hospital, Sendai, Japan, and they were compared with those of 131 patients with node-negative cancer. The independent risk factors influencing the lymph node metastasis were determined by multiple logistic regression analysis. Depth of invasion, macroscopic appearance, cancer-stromal relationship, and lymphatic microinvasion were found to be associated with lymph node metastasis. The variables found to be significant risk factors for lymph node metastasis were depth of invasion (P = 0.0250) and lymphatic microinvasion (P = 0.0028). It is possible for even a small gastric cancer tumor to have lymph node metastasis. A surgeon treating a small gastric cancer tumor must consider that although the cure rate is high, >10% of these tumors have lymph node metastases. Because of the possibility of lymph node metastasis, even with accurate knowledge of the depth of cancer invasion, selective performance of local resection or limited surgery with incomplete lymph node dissection is not justified. Accurate preoperative diagnosis and the appropriate decision for surgical indication are important. Large-scale randomized, controlled trials should be performed to show the advantage of limited surgery for gastric cancer.
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