A.吞咽困難 B.胸骨后疼痛 C.食物或黏液反流 D.進(jìn)粗食時(shí)有暫時(shí)性胸骨后停留或異物感 E.消瘦
A.前縱隔 B.前上縱隔 C.中縱隔 D.前下縱隔 E.后縱隔
A.1/2 B.1/3 C.2/3 D.2/5 E.3/5