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	<title>大腸癌 &#8211; Happy GI life</title>
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	<description>大家好，我是胃腸肝膽科 賴佳業醫師，在這裡與您分享醫療新知與經驗，一起腸保健康^_^</description>
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		<title>糞便潛血陽性可以不做大腸鏡嗎?</title>
		<link>https://chiayehlai.com/positive-ob/</link>
		
		<dc:creator><![CDATA[賴佳業醫師｜腸胃｜健康｜減重]]></dc:creator>
		<pubDate>Sun, 18 Jul 2021 05:42:40 +0000</pubDate>
				<category><![CDATA[胃鏡大腸鏡]]></category>
		<category><![CDATA[精選文章]]></category>
		<category><![CDATA[內視鏡]]></category>
		<category><![CDATA[大腸癌]]></category>
		<category><![CDATA[早期癌篩檢]]></category>
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					<description><![CDATA[大腸癌篩檢使用的糞便潛血檢查為定量免疫法糞便潛血(fecal&#8230;]]></description>
										<content:encoded><![CDATA[
<h1 class="has-medium-font-size wp-block-heading">大腸癌篩檢使用的糞便潛血檢查為定量<strong>免疫法糞便潛血</strong>(fecal immunochemical test, 簡稱<strong>FIT</strong>)，與一般化學法糞便潛血(guaiac-based fecal occult blood test，簡稱g-FOBT)相比，更能精確地偵測只來自大腸的潛血，且不易受食物的影響。因此<strong><span class="has-inline-color has-vivid-red-color">當糞便潛血陽性時，都建議盡早接受大腸鏡檢查</span></strong>!</h1>



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<div class="wp-block-image"><figure class="aligncenter size-large"><img data-recalc-dims="1" fetchpriority="high" decoding="async" width="1024" height="538" src="https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/positiveOBflowchart.jpg?resize=1024%2C538&#038;ssl=1" alt="positiveOBflowchart" class="wp-image-1637" title="糞便潛血陽性可以不做大腸鏡嗎?" srcset="https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/positiveOBflowchart.jpg?resize=1024%2C538&amp;ssl=1 1024w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/positiveOBflowchart.jpg?resize=300%2C158&amp;ssl=1 300w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/positiveOBflowchart.jpg?resize=768%2C404&amp;ssl=1 768w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/positiveOBflowchart.jpg?resize=1536%2C807&amp;ssl=1 1536w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/positiveOBflowchart.jpg?resize=1170%2C615&amp;ssl=1 1170w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/positiveOBflowchart.jpg?resize=585%2C307&amp;ssl=1 585w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/positiveOBflowchart.jpg?w=1863&amp;ssl=1 1863w" sizes="(max-width: 1024px) 100vw, 1024px" /></figure></div>



<h2 class="wp-block-heading">Q1: 糞便潛血陽性的可能原因?</h2>



<p class="wp-block-paragraph" style="font-size:17px">除了<strong><span class="has-inline-color has-luminous-vivid-orange-color">大腸息肉</span></strong>、<span class="has-inline-color has-luminous-vivid-orange-color"><strong>大腸癌</strong></span>外，如果大腸有<strong>「憩室」</strong>、<strong>「發炎性腸道疾病 (IBD)」</strong>、<strong>「發炎」</strong>、<strong>「出血」</strong>、<strong>「痔瘡」</strong>等，也會讓糞便潛血檢查為陽性。</p>



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<h2 class="wp-block-heading">Q2: 糞便潛血陽性，可以再驗一次確定是陽性再做大腸鏡嗎?</h2>



<p class="wp-block-paragraph" style="font-size:17px">根據美國預防服務工作組(US Preventive Services Task Force)指引，<strong><span class="has-inline-color has-vivid-red-color">糞便潛血檢查陽性都應該直接接受大腸鏡檢查</span></strong>，不建議再驗一次糞便潛血。</p>



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<h2 class="wp-block-heading">Q3: 糞便潛血陰性，代表大腸一定沒有問題?</h2>



<p class="wp-block-paragraph" style="font-size:17px">一次糞便潛血檢查對大腸癌有不錯的敏感度和特異性 (敏感度77%，特異性94%)，但對大腸息肉只有高特異性 (敏感度20%-30%，特異性90%)。因此，<strong><span class="has-inline-color has-vivid-cyan-blue-color">糞便潛血檢查陰性不代表大腸一定沒有問題</span></strong>!</p>



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<h2 class="wp-block-heading">Q4: 糞便潛血陽性，大腸鏡卻沒發現息肉是什麼原因?</h2>



<ol class="wp-block-list" style="font-size:17px"><li>糞便潛血檢查陽性是因為大腸有憩室、發炎性腸道疾病 (IBD)、發炎、出血或痔瘡引起</li><li><strong>清腸準備不佳</strong>(大腸還有大量糞便)，造成檢查過程中沒辦法看清楚所有大腸黏膜</li><li>大腸息肉太小或是位於死角不易發現</li><li><span class="has-inline-color has-black-color">糞便潛血檢查陽性，大腸鏡發現息肉的比例大約為<strong>40%</strong></span></li></ol>



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<h2 class="wp-block-heading">Q5: 糞便潛血陽性，大腸鏡沒有發現要怎麼辦?</h2>



<p class="wp-block-paragraph" style="font-size:17px">台大邱瀚模教授團隊研究發現 (2021年發表在英國胃腸病學會期刊Gut)，當糞便潛血檢查陽性，大腸鏡卻沒有發現時，之後再定期接受糞便潛血檢查，與沒有定期追蹤相比，可以<strong>降低53%大腸癌風險</strong>！因此，不管什麼原因造成糞便潛血檢查陽性，大腸鏡卻沒有發現時，建議還是要<strong><span class="has-inline-color has-vivid-cyan-blue-color">定期接受糞便潛血檢查</span></strong>!</p>



<p class="has-text-color wp-block-paragraph" style="color:#565f65;font-size:17px"><span class="has-inline-color has-cyan-bluish-gray-color">若大腸準備不佳，建議妥善清腸後再接受一次大腸鏡檢查<br>糞便潛血檢查有5%-15%的機率為偽陽性</span></p>



<blockquote class="wp-block-quote is-layout-flow wp-block-quote-is-layout-flow"><p>引用文獻: </p><p>1. Recommendations on Fecal Immunochemical Testing to Screen for Colorectal Neoplasia: A Consensus Statement by the US Multi-Society Task Force on Colorectal Cancer<br>Gastroenterology 2017;152:1217–1237</p><p>2. Faecal immunochemical test after negative colonoscopy may reduce the risk of incident colorectal cancer in a population-based screening programme<br>Gut 2021;70:1318–1324.</p><p>3. Participant-Related Risk Factors for False-Positive and False-Negative Fecal Immunochemical Tests in Colorectal Cancer Screening: Systematic Review and Meta-Analysis<br>Am J Gastroenterol. 2018 Dec;113(12):1778-1787.</p></blockquote>



<p class="has-background wp-block-paragraph" style="background-color:#fff1e7;font-size:18px"><strong>相關文章: <a href="https://chiayehlai.com/coloncascreen/">定期糞便檢查-預防大腸癌發生</a></strong></p>
]]></content:encoded>
					
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">223</post-id>	</item>
		<item>
		<title>定期糞便潛血檢查-預防大腸癌發生</title>
		<link>https://chiayehlai.com/coloncascreen/</link>
		
		<dc:creator><![CDATA[賴佳業醫師｜腸胃｜健康｜減重]]></dc:creator>
		<pubDate>Sun, 11 Jul 2021 04:43:53 +0000</pubDate>
				<category><![CDATA[胃鏡大腸鏡]]></category>
		<category><![CDATA[內視鏡]]></category>
		<category><![CDATA[大腸癌]]></category>
		<category><![CDATA[早期癌篩檢]]></category>
		<guid isPermaLink="false">http://pencidesign.com/soledad/soledad-hipster/?p=231</guid>

					<description><![CDATA[2020年6月，衛福部國民健康署發表了最新的2017年癌症登&#8230;]]></description>
										<content:encoded><![CDATA[
<h1 class="has-medium-font-size wp-block-heading">2020年6月，衛福部國民健康署發表了最新的2017年癌症登記報告，報告指出<strong><span class="has-inline-color has-vivid-red-color">台灣大腸癌發生人數連續12年排名第一</span></strong>，2017年共有16,408人罹患大腸癌!</h1>



<p class="has-drop-cap has-text-align-center has-medium-font-size wp-block-paragraph"><img data-recalc-dims="1" decoding="async" width="600" height="397" class="wp-image-1532" style="width: 600px;" src="https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/cancer.jpg?resize=600%2C397&#038;ssl=1" alt="cancer" title="定期糞便潛血檢查-預防大腸癌發生" srcset="https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/cancer.jpg?w=1528&amp;ssl=1 1528w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/cancer.jpg?resize=300%2C199&amp;ssl=1 300w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/cancer.jpg?resize=1024%2C678&amp;ssl=1 1024w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/cancer.jpg?resize=768%2C509&amp;ssl=1 768w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/cancer.jpg?resize=1170%2C775&amp;ssl=1 1170w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/cancer.jpg?resize=780%2C516&amp;ssl=1 780w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/cancer.jpg?resize=585%2C387&amp;ssl=1 585w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/cancer.jpg?resize=263%2C175&amp;ssl=1 263w" sizes="(max-width: 600px) 100vw, 600px" /></p>



<p class="wp-block-paragraph" style="font-size:18px">罹患大腸癌的風險因子包刮:「<strong>大於50歲</strong>」、「<strong>有大腸息肉病史</strong>」、「<strong>大腸癌家族史</strong>」、「<strong>發炎性腸道疾病(IBD)病史</strong>」、「<strong>低纖維高油脂飲食</strong>」、「<strong>缺乏運動</strong>」、「<strong>肥胖</strong>」、「<strong>抽菸</strong>」、「<strong>喝酒</strong>」等。</p>



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<p class="wp-block-paragraph" style="font-size:16px"><strong>大腸癌是可以預防的</strong>!除了避免上述的危險因子外(多運動、減重、戒菸戒酒、多吃高纖維的食物)，最重要的就是<strong><span class="has-inline-color has-luminous-vivid-orange-color">定期接受糞便潛血檢查</span></strong>!當大腸有早期大腸癌或是息肉時，大便會因為與腫瘤或息肉摩擦而讓糞便潛血顯示為陽性，這時候接受大腸鏡將早期癌症或息肉切除，就可以避免早期癌症演變為晚期，或是讓良性的大腸息肉進展為惡性腫瘤。</p>



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<h2 class="wp-block-heading" style="font-size:18px">2010年國民健康署全面實施<span style="text-decoration: underline;">50-74歲每兩年1次免費糞便潛血檢查</span>以來，大腸癌發生率有逐年下降的趨勢，且新發生的大腸癌，早期(0-1期)的比例越來越高，晚期(2-4期)的比例越來越低，證明了糞便潛血檢查成效非常好!</h2>



<p class="has-text-align-center wp-block-paragraph" style="font-size:17px"><img data-recalc-dims="1" decoding="async" width="700" height="346" class="wp-image-1528" style="width: 700px;" src="https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncacer.jpg?resize=700%2C346&#038;ssl=1" alt="coloncacer" title="定期糞便潛血檢查-預防大腸癌發生" srcset="https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncacer.jpg?w=1775&amp;ssl=1 1775w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncacer.jpg?resize=300%2C148&amp;ssl=1 300w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncacer.jpg?resize=1024%2C507&amp;ssl=1 1024w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncacer.jpg?resize=768%2C380&amp;ssl=1 768w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncacer.jpg?resize=1536%2C760&amp;ssl=1 1536w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncacer.jpg?resize=1170%2C579&amp;ssl=1 1170w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncacer.jpg?resize=585%2C289&amp;ssl=1 585w" sizes="(max-width: 700px) 100vw, 700px" /></p>



<p class="has-text-align-center wp-block-paragraph" style="font-size:17px"><img data-recalc-dims="1" loading="lazy" decoding="async" width="700" height="402" class="wp-image-1533" style="width: 700px;" src="https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncastage.jpg?resize=700%2C402&#038;ssl=1" alt="coloncastage" title="定期糞便潛血檢查-預防大腸癌發生" srcset="https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncastage.jpg?w=1670&amp;ssl=1 1670w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncastage.jpg?resize=300%2C172&amp;ssl=1 300w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncastage.jpg?resize=1024%2C589&amp;ssl=1 1024w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncastage.jpg?resize=768%2C441&amp;ssl=1 768w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncastage.jpg?resize=1536%2C883&amp;ssl=1 1536w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncastage.jpg?resize=1170%2C673&amp;ssl=1 1170w, https://i0.wp.com/chiayehlai.com/wp-content/uploads/2021/07/coloncastage.jpg?resize=585%2C336&amp;ssl=1 585w" sizes="auto, (max-width: 700px) 100vw, 700px" /></p>



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<p class="has-background wp-block-paragraph" style="background-color:#f0f0f0;font-size:17px">目前國民健康署只提供50-74歲每兩年1次的糞便潛血檢查，但2021年美國預防服務工作組(US Preventive Services Task Force)建議<strong>每年做一次糞便潛血檢查</strong>，<strong>更能降低大腸癌的發生率和死亡率</strong>!</p>



<blockquote class="wp-block-quote is-layout-flow wp-block-quote-is-layout-flow"><p>引用文獻:</p><p>1. 衛生福利部國民健康署2017癌症登記報告</p><p>2. Screening for Colorectal Cancer US Preventive Services Task Force Recommendation Statement<br>JAMA. 2021;325(19):1965-1977.</p></blockquote>



<p class="has-background wp-block-paragraph" style="background-color:#fff1e6;font-size:18px"><strong>相關文章: <a href="https://chiayehlai.com/positive-ob/">糞便潛血陽性可以不做大腸鏡嗎?</a></strong></p>
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