A.胃十二指腸潰瘍 B.門脈高壓癥 C.出血性胃炎 D.胃癌 E.慢性萎縮性胃炎
A.5%~10% B.10%~15% C.15%~20% D.20%~25% E.25%~30%
A.憩室病B.癌C.缺血性結(jié)腸炎D.血管發(fā)育異常E.息肉病