单项选择题
A.开腹手术胆囊切除 B.腹腔镜胆囊切除 C.腹腔镜胆囊切除,切除困难时中转开腹 D.做ERCP或MRCP E.保守治疗
A.4周以后 B.2周以后 C.1周以后 D.12周以后 E.24周以后