直肠癌的各个周期?
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<h2 style="color: black; text-align: left; margin-bottom: 10px;">直肠癌的临床症状</h2>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">各<span style="color: black;">周期</span>症状</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">0、I期:症状不<span style="color: black;">显著</span>,可能会产生便血、腹痛、贫血、大便习惯和形状的改变等。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Ⅱ、Ⅲ、Ⅳ期:急慢性肠梗阻、腹痛、贫血、消瘦、食欲<span style="color: black;">衰退</span>、乏力、大便习惯和形状的改变、便血、脓血便或粘液便等。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">关联</span>症状解析</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">急、慢性肠梗阻:<span style="color: black;">因为</span>肿瘤侵犯<span style="color: black;">引起</span>肠管狭窄,可<span style="color: black;">导致</span>肠腔阻塞致完全性及不完全性肠梗阻,可进行性加重。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">腹痛:<span style="color: black;">因为</span>肿瘤局部侵犯、肠道刺激或肠梗阻、穿孔等<span style="color: black;">原由</span><span style="color: black;">导致</span>直肠癌<span style="color: black;">病人</span>产生腹痛症状。慢性肠梗阻时,可<span style="color: black;">显现</span>腹部膨胀,肠鸣音亢进和阵发性绞痛。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">贫血:<span style="color: black;">重点</span>是<span style="color: black;">因为</span>急性或慢性<span style="color: black;">流血</span><span style="color: black;">导致</span>,其次<span style="color: black;">由于</span>肿瘤<span style="color: black;">引起</span>的摄入<span style="color: black;">阻碍</span>或胃肠功能<span style="color: black;">错乱</span>及肿瘤对造血器官的破坏<span style="color: black;">引起</span><span style="color: black;">病人</span><span style="color: black;">显现</span>贫血症状。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">全身恶病质:<span style="color: black;">重点</span><span style="color: black;">出现</span>于直肠癌晚期,<span style="color: black;">病人</span>可<span style="color: black;">显现</span>食欲<span style="color: black;">衰退</span>、消瘦、乏力、黄疸或腹水等。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">大便习惯改变:排便习惯<span style="color: black;">出现</span>改变,腹泻或便秘,排便不尽感,便前有肛门下坠感。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">大便形状改变:大便进行性变细,在晚期可伴下腹痛。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">便血:为直肠癌最<span style="color: black;">平常</span>的临床症状之一,在<span style="color: black;">初期</span>肿瘤较小时,<span style="color: black;">通常</span>不<span style="color: black;">显现</span>便血症状,随着瘤体的增大,<span style="color: black;">因为</span><span style="color: black;">各样</span><span style="color: black;">原由</span><span style="color: black;">引起</span>粘膜<span style="color: black;">出现</span>糜烂</p>
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