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【单选题】
男,31岁,反复上腹疼痛10余年,因症状加重伴皮肤巩膜,畏寒发热2天入院。体检示:神志淡漠,体温39.5°C,脉搏125次/分钟,血压80/50mmHg。上腹压痛,肌紧张。WBC 25×10 9 /L,N 0.95。血清总胆红素209umol/L,谷丙转氨酶310 U/L。B超提示肝外胆管扩张,内有强光团伴声影。该病人发病的病理基础是:A.
胆道畸形
B.
胆道扩张
C.
胆道梗阻
D.
胆囊梗阻
E.
胆囊功能失调
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