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认识前列腺癌

ID: ANH15157chis
医学动画文字记录:如果你或你关心的人被诊断患有前列腺癌,这段视频将帮助你了解前列腺癌如何影响你的身体。前列腺是男性体内的一种腺体,产生精液中的部分液体。它位于膀胱下方,大肠最后一部分(称为直肠)的前面。前列腺包裹着尿道的一部分,尿道是将尿液和精液排出体外的管道。大多数前列腺癌起源于腺体内产生前列腺液的小囊。癌细胞由排列在囊内的腺体细胞形成。随着时间的推移,癌细胞会增殖并形成恶性肿瘤。然而,大多数前列腺癌的生长速度比其他类型的癌症慢。前列腺癌的一个重要危险因素是年龄。前列腺癌在65岁以上的男性中更为常见。种族是另一个危险因素。前列腺癌在非裔美国人中比在其他种族中更常见。如果有父亲或兄弟等亲属有前列腺癌病史,这种风险也会更高。早期前列腺癌通常没有症状。然而,随着前列腺肿大,你可能会出现以下症状——排尿困难;排尿乏力、排尿中断或排尿疼痛;尿频,尤其是夜间;射精疼痛;勃起困难;尿液或精液中含有血液;下背部、臀部或骨盆疼痛或僵硬。应注意这些症状可能是由前列腺肿大引起的,而不是癌症。如果你患有前列腺癌,医生需要确定分级和分期,或疾病的进展。分级的依据是前列腺组织在显微镜下的正常程度。前列腺癌的分级系统称为格里森分级系统。在这个系统中,两个主要肿瘤区域的样本将被分为1~5级。这些级别加在一起,得出2~10的格里森评分。格里森评分越高,癌症越有可能生长和扩散到其他区域。前列腺癌分期是基于癌症数量和发现的位置。分期从I期到IV期。I期,肿瘤未扩散到前列腺外。Ⅱ期,癌症更严重,但仍然只发生在前列腺。III期,癌细胞已经扩散到前列腺包膜。IV期,癌细胞已经扩散到附近的组织以及身体更远处的区域。当你被诊断患有前列腺癌时,请保持与医生和癌症护理团队交流。

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