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大揭秘:胃息肉会不会发展成胃癌?
2017-08-09 10:33:38 中国青年网
不少胃部不适的人做胃镜检查时,都会发现长有息肉。对于胃息肉患者,通常都会担心息肉会不会长大,对身体有什么影响,或者会不会变成胃癌。
胃息肉有什么症状?胃息肉患者多伴有胃酸缺乏或胃酸低下,因此常出现上腹部轻微疼痛与不适,恶心、厌食、消化不良、体重下降及腹泻等症状。息肉表面如有糜烂、溃疡,可发生间歇性或持续性出血。
胃息肉会发生癌变吗?胃息肉是一种上皮性良性肿瘤。在内视镜下表现为高出胃粘膜平面的圆形或半球形的隆起,表面粘膜光滑,以胃窦部多发。
胃息肉不是胃癌,但是胃息肉有癌变的可能,是胃癌的癌前期状态。因此患有胃息肉的病人应提高警惕,定期随访,及时处理。
腺瘤性息肉属真性肿瘤,占胃息肉的10%~25%,其发生率随年龄而增长,男性比女性多见(2:1),好发于胃窦部,癌变率很高,达40%左右。其中尤以绒毛状腺瘤的癌变率最高,一般当息肉的直径超过2厘米时需警惕恶变。对大多数有蒂的息肉,最简单和最佳的处理方法是内镜下摘除。不能做内镜摘除的腺瘤,应切开胃做腺瘤癌切除,并从邻近出多取粘膜活检以观察有无异型增生或明显的癌变存在。
总之,胃息肉虽是良性癌变,但在发展演变过程中,可以恶变。胃息肉恶变成癌的发生率达25%~50%。可以这么说,胃息肉是癌前期病变。
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