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不同治療方法對(duì)肝門部膽管癌預(yù)后的影響

2021-04-12 00:00:00孫嵩曹廣華仲灝辰馮玉杰孫兆偉張炳遠(yuǎn)

[摘要]"目的"探討不同的治療方法對(duì)肝門部膽管癌(HCCA)病人預(yù)后的影響。方法"回顧性分析我院2006—2015年收治的366例HCCA病人的臨床資料,并根據(jù)治療方法將病人分為根治性切除組、非根治性切除組和單純減黃組。使用Kaplan-Meier生存曲線進(jìn)行生存分析,并使用Cox比例風(fēng)險(xiǎn)模型評(píng)估HCCA的獨(dú)立預(yù)后因素。結(jié)果"根治性切除組(115例)、非根治性切除組(97例)以及單純減黃組(154例)病人的1年生存率分別為71.7%、52.5%和35.3%,2年生存率分別為52.2%、25.8%和7.8%,3年生存率分別為36.7%、8.9%和0;中位生存期分別為23.6、14.7和9.7個(gè)月。3組病人的1、2、3年生存率及中位生存期比較差異均有統(tǒng)計(jì)學(xué)意義(χ2=34.31~64.55,Plt;0.001)。多因素分析顯示,治療方法、清蛋白、總膽紅素、術(shù)后病理T分期和遠(yuǎn)處轉(zhuǎn)移等為HCCA的獨(dú)立預(yù)后指標(biāo)。結(jié)論"根治性切除可顯著提高HCCA病人的生存率,提高清蛋白水平和降低總膽紅素水平可以改善HCCA病人的預(yù)后。

[關(guān)鍵詞]"Klatskin腫瘤;外科手術(shù);預(yù)后;影響因素分析

[中圖分類號(hào)]"R735.7;R657.43

[文獻(xiàn)標(biāo)志碼]"A

[文章編號(hào)]"2096-5532(2021)04-0481-06

肝門部膽管癌(HCCA),也稱為Klatskin瘤,是一種累及肝總管、左右肝管以及肝管匯合部分的腫瘤[1-3]。由于其特殊的生長(zhǎng)位置、較低的切除率和較低的5年生存率,HCCA對(duì)于臨床醫(yī)生來說是一個(gè)頗具挑戰(zhàn)性的難題[4-6]。根治性切除可以延長(zhǎng)HCCA病人生存期,從而使5年生存率達(dá)到20%~40%[7-10],但是大多數(shù)病人由于腫瘤位置較高或者已侵犯周圍血管神經(jīng),因此在診斷明確后不宜行根治性切除,故這些病人需行非根治性切除、內(nèi)鏡逆行膽管置管引流(ERBD)或者經(jīng)皮經(jīng)肝膽管置管引流(PTCD)[8,11-12]。上述方法對(duì)HCCA病人生存的影響仍存在爭(zhēng)議[13]。此外,影響HCCA病人生存的預(yù)后因素也存在爭(zhēng)議。因此,本研究回顧性分析了2006年1月1日—2015年12月31日在我院接受治療的366例HCCA病人的臨床資料,探討不同治療方法對(duì)HCCA病人預(yù)后的影響。

1"資料和方法

1.1"一般資料

回顧性收集我院2006年1月1日—2015年12月31日收治的366例HCCA病人的臨床資料。本文366例病人,男233例,女133例;中位年齡60歲;平均住院時(shí)間16 d。所有病人均接受了上腹部增強(qiáng)CT、胰膽管造影磁共振成像(MRCP)和肝功能等術(shù)前檢查。伴有糖尿病、高血壓、冠狀動(dòng)脈粥樣硬化性心臟病等內(nèi)科基礎(chǔ)疾病的病人44例。根據(jù)有關(guān)文獻(xiàn)重度飲酒和吸煙的診斷標(biāo)準(zhǔn)[14],有重度飲酒史者41例,有重度吸煙史者70例。本研究經(jīng)青島大學(xué)附屬醫(yī)院倫理委員會(huì)審查批準(zhǔn),所有研究對(duì)象均同意在科學(xué)研究中使用其醫(yī)學(xué)信息。

1.2"納入標(biāo)準(zhǔn)

①病人首次診斷為HCCA,且之前未行其他治療;②病人后續(xù)隨訪信息可獲得;③組織病理學(xué)結(jié)果、實(shí)驗(yàn)室檢查結(jié)果、影像學(xué)檢查結(jié)果等資料可獲得;④排除伴有重度心腦血管、腎臟、肺部基礎(chǔ)疾病及重度自身免疫性疾病的病人;⑤排除僅接受剖腹探查及腹腔鏡下探查并取活檢的病人。

1.3"病人分組

將病人分為3組:根治性切除組115例,非根治性切除組97例,單純減黃組154例。根治性切除定義為手術(shù)切緣的肉眼觀察及病理學(xué)結(jié)果皆為陰性(R0切除)。本文根治性切除組中,有110例病人術(shù)中根據(jù)Bismuth-Corlette分型進(jìn)行了肝切除術(shù)。非根治性切除定義為術(shù)后病理結(jié)果提示切緣陽(yáng)性(R1切除,54例)和肉眼觀察及病理結(jié)果皆提示切緣陽(yáng)性(R2切除,43例)。單純減黃組病人的治療方式有兩種,包括ERBD(膽管支架通常是塑料的,術(shù)中平均置入的支架數(shù)量為每人2枚)和PTCD(放置引流管的平均數(shù)量為每人1根)[15]。

1.4"隨訪情況

隨訪主要包括電話聯(lián)系和門診復(fù)查隨訪,在必要時(shí)可進(jìn)行信函和戶籍查詢。在最初的2年中,每3個(gè)月對(duì)病人進(jìn)行一次隨訪,之后的隨訪周期為6個(gè)月。門診復(fù)查常規(guī)行血癌胚抗原(CEA)和糖類抗原19-9(CA19-9)、消化系統(tǒng)超聲、上腹部CT平掃等檢查,若考慮腫瘤復(fù)發(fā)時(shí),再行增強(qiáng)CT、MRI等檢查,以明確復(fù)發(fā)與否。最后一次隨訪時(shí)間為2018年12月31日。生存期定義為初次治療至死亡或最后一次隨訪的時(shí)間。失訪者生存期不計(jì)入統(tǒng)計(jì)數(shù)據(jù)。

1.5"數(shù)據(jù)統(tǒng)計(jì)分析

所有數(shù)據(jù)均使用Microsoft Excel軟件(美國(guó)Microsoft公司)進(jìn)行管理,并使用IBM SPSS Statistics軟件(版本20.0,美國(guó)IBM公司)進(jìn)行統(tǒng)計(jì)分析。使用Kaplan-Meier生存曲線分析不同治療方法對(duì)生存的影響,構(gòu)建Cox比例風(fēng)險(xiǎn)回歸模型進(jìn)行HCCA預(yù)后影響因素的多因素分析。檢驗(yàn)水準(zhǔn)為α=0.05(雙向檢驗(yàn))。

2"結(jié)"果

2.1"各組生存情況比較

本研究共納入366例HCCA病人,其中42例失訪,隨訪率為88.5%。根治性切除組的中位生存期為23.6個(gè)月(1.0~71.0個(gè)月),1、2、3年生存率分別為71.7%、52.2%和36.7%;非根治性切除組的中位生存期為14.7個(gè)月(2.0~45.4個(gè)月),1、2、3年生存率分別為52.5%、25.8%和8.9%;單純減黃組的中位生存期為9.7個(gè)月(4.0~28.0個(gè)月),1、2、3年生存率分別為35.3%、7.8%和0。3組病人的1、2、3年生存率及中位生存期比較差異均有顯著性(χ2=34.31~64.55,Plt;0.001)。見圖1。行R1切除和R2切除病人的生存期(14.0個(gè)月vs 13.0個(gè)月)比較,以及接受ERBD治療和PTCD治療病人的生存期(9.0個(gè)月vs 8.7個(gè)月)比較,差異均無統(tǒng)計(jì)學(xué)意義(Pgt;0.05)。見圖2。

2.2"預(yù)后影響因素分析

單因素分析顯示,治療方法、清蛋白、前清蛋白、總膽紅素、C反應(yīng)蛋白、腫瘤直徑、術(shù)后病理T分期、淋巴結(jié)轉(zhuǎn)移、遠(yuǎn)處轉(zhuǎn)移和Bismuth-Corlette分型等與生存時(shí)間顯著相關(guān)。見表1。將這些差異具有統(tǒng)計(jì)學(xué)意義因素納入Cox比例風(fēng)險(xiǎn)回歸模型進(jìn)行分析,結(jié)果顯示,治療方法(HR=1.88,95%CI=1.21~2.91)、清蛋白(HR=0.65,95%CI=0.45~0.94)、總膽紅素(HR=1.63,95%CI=1.02~2.59)、術(shù)后病理T分期(HR=1.43,95%CI=1.18~1.72)和遠(yuǎn)處轉(zhuǎn)移(HR=2.29,95%CI=1.15~4.53)等為HCCA獨(dú)立預(yù)后影響因素。見表2。

3"討"論

本次研究的366例HCCA病人中,有212例病人接受了切除手術(shù),根治性切除率為54.2%(115/212),比GUGLIELMI等[16]報(bào)道的76.7%要低,但GUGLIELMI等[16]僅研究了62例病人。本文手術(shù)切除病人的中位生存期明顯長(zhǎng)于單純減黃處理病人,就中位生存期和1、2、3年生存率而言,根治性切除優(yōu)于其他治療方法[17-19]。多因素分析結(jié)果也顯示,治療方法為HCCA的獨(dú)立預(yù)后影響因素。

對(duì)于僅接受單純減黃處理的HCCA病人,使用ERBD和PTCD治療對(duì)生存率無顯著影響。

本文研究結(jié)果顯示,清蛋白、總膽紅素水平為HCCA的獨(dú)立預(yù)后影響因素。清蛋白水平反映了在我院接受治療之前病人的空腹血清清蛋白水平,也可以反映病人的營(yíng)養(yǎng)狀況[20-21]。當(dāng)清蛋白水平低且營(yíng)養(yǎng)狀況較差時(shí),病人將無法接受外科手術(shù)等治療[22-23]。

本文研究結(jié)果顯示,清蛋白≥35 g/L的病人比清蛋白lt;35 g/L的病人具有更高的生存率。臨床上可通過靜脈輸注人血清蛋白改善HCCA病人的預(yù)后[24-25]。將病人按照術(shù)前總膽紅素水平(以40 mg/L為界)進(jìn)行分組對(duì)照研究,結(jié)果顯示,兩組病人的生存率存在顯著差異,這反映了總膽紅素對(duì)HCCA病人預(yù)后的影響;多因素分析也顯示,總膽紅素是HCCA的一個(gè)獨(dú)立預(yù)后因素。血清膽紅素水平升高可對(duì)全身多個(gè)器官造成損害,因此術(shù)前降低膽紅素水平可改善預(yù)后[2,26-28]。但術(shù)前膽紅素水平為多少適合先行減黃處理和膽紅素降至多少可行手術(shù)治療等問題仍存在爭(zhēng)議[29-31]。

本文結(jié)果顯示,術(shù)后病理T分期和遠(yuǎn)處轉(zhuǎn)移為HCCA的獨(dú)立預(yù)后影響因素。我院對(duì)HCCA病人的治療主要集中在肝膽外科,有些在其他科室接受治療的HCCA病人具有較早的Bismuth-Corlette分期,CT或MRI等檢查顯示無遠(yuǎn)處轉(zhuǎn)移,因此接受了非手術(shù)治療,從而使這部分病人錯(cuò)失了根治性切除的機(jī)會(huì)。目前,HCCA的治療仍有多種方法可供選擇[32-33]。因此,多學(xué)科聯(lián)合診治對(duì)改善HCCA病人的預(yù)后具有重要的價(jià)值[34-36]。

總之,早期診斷和根治性手術(shù)切除對(duì)于延長(zhǎng)HCCA的生存期很重要,術(shù)前提高清蛋白水平和降低總膽紅素水平有助于改善HCCA病人的預(yù)后。

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(本文編輯"馬偉平)

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