食管癌的早期临床表现是什么?
http://zhidao.baidu.com/question/310496244426861324.html?fr=iks&word=%CA%B3%B9%DC%C0%A9%D5%C5%D6%B8%B5%C4%CA%C7%D4%DACT%BB%F2%D5%DF%CA%C7X%CF%DF%CF%C2%CA%B3%B9%DC%B5%C4%D6%B1%BE%B6%B3%AC%B9%FD%D5%FD%B3%A3%B5%C4%B2%CE%BF%BC%D6%B5%B7%B6%CE%A7.%D2%BB%B0%E3%B3%A3%BC%FB%B5%C4%D2%FD%C6%F0%CA%B3%B9%DC%C0%A9%D5%C5%B5%C4%BC%B2%B2%A1%CE%AA%CA%B3%B9%DC%CF%C2%B6%CE%BB%F2%D5%DF%CA%C7%EA%DA%C3%C5%B4%A6%CF%E0%B9%D8%B5%C4%BC%B2%B2%A1%2C%B1%C8%C8%E7%CA%B3%B9%DC%B5%C4%D6%D8%B6%C8%B5%C4%D1%D7%D6%A2%2C%C0%A3%D1%F1%D2%FD%C6%F0%CA%B3%B9%DC%B9%DC%B1%DA%D4%F6%BA%F1%2C%BB%F2%D5%DF%CA%C7%CA%B3%B9%DC%B0%A9%CF%F2%C7%BB%C4%DA%C9%FA%B3%A4%D2%FD%C6%F0%B5%C4%B9%A3&ie=gbk ——百度知道
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答:每年大约有30万人死于食道癌。我国的发病率和死亡率差别很大,我国是食管癌的高发区之一。平均每年约有14万人死于食道癌,男性所占比例高于女性,大多在40岁以上。鉴于本病发病率高且早发现、及时治疗