血行转移:
较晚发生.晚期可以转移到各脏器:肝30%,肺(胸膜)20%,骨8%,还有少数转移 到肾、大网膜(腹膜)、肾上腺、脑、心(心包)及脾等.
The First Clinical College of Gannan medical
Gannan medical university
CAI
Carcinoma
概 述 (General discussion)
是一种发生于食管上皮的常见消化道恶性肿瘤, 在我国其发病率仅次于胃癌,居恶性肿瘤的第二 位;
全世界每年有30万人死于食管癌,中国每年死亡 15万人左右,中国是高发区;
发病大多40岁以上,多见于男性,男女发病率之 比为3:1;
肿瘤发生的部位以食管中段最多见,下段次之, 而上段最少。
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