患者,男,50岁,持续性腹泻1年,每无4〜5次黄色稀水便或糊状便,食欲明显下降,1 个月来出现腹胀及下肢水肿。查体:全身消瘦,皮肤干燥,腹部轻度膨隆,移动性浊音阳性,肝脾未及,双下肢压陷性水肿。最可能的诊断是
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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