患者,男,55岁,上腹部无规律性疼痛、消瘦—年入院,胃镜示胃小弯处有一个2cmX2cm大小溃疡,边缘不整齐,有坏死,少量渗血。查体表淋巴结对诊断意义最大的是
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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