大肠腺瘤摘除后5年复发率及随访间期的探讨

初步探讨大肠腺瘤摘除后的复发率及随访间期。方法：107例经病理检查确诊为大肠腺瘤者,在腺瘤摘除后第3年及第5年行全结肠镜随访;随机选择107例初次结肠镜检查正常者在第5年随访全结肠镜作为对照。结果：对照组60例接受随访者中,5年发现有小腺瘤或息肉（8．3％）。腺瘤组第3年72例接受随访者中,23例（31．9％）发现管状腺瘤或增生性息肉;第5年有76例患者接受随访,共发现25例37枚息肉（复发率32．9％;95％可信区间;22．1％－43．7％）,复发率明显高于对照组（P＜0．01）,其中23例为状腺瘤,2例为增生性息肉,最大腺瘤直径为12mm。第5年时,原腺瘤数为1、2或2枚以上者的复发率分别为20．0％、38．9％和55．6％（P＝0．024）;原腺瘤直径≤5mm及＞5mm者的复发率分别为23．4％和48．3％（P＝0．025）;复发率与患者的年龄及腺瘤位置关系不大。结论：多发性腺瘤患者及较大腺瘤者较易复发;腺瘤后5年内随访是安全的;对小的单发低度增生不良腺瘤患者及初次检查正常者,可延长随访间期。     

大肠腺瘤性息肉766例分析

自 1980年至 1997年 12月我院内镜室在 11 217例结肠镜检查中,检出并经病理证实腺瘤性息肉 766例,检出率 6.82％。现报告分析如下。 　　1．临床资料：在 766例腺瘤性息肉中,男 494例,女 272例,男女之比为 1.8： 1。年龄 3～ 86岁,平均年龄 46.2岁。 　　2．内镜检查：息肉分布：位于直肠 325例（ 42.42％）,乙状结肠 233例（ 30.41％）,降结肠、脾曲 61例（ 7.96％）,横结肠 68例（ 8.87％）,肝曲、升结肠 32例（ 4.17％）,回盲部 33例（ 4.30％）,全结肠 14例（ 1.82％）。息肉形态：有蒂 227例,亚蒂 223例,无蒂 316例,息…     

老年人大肠息肉的临床分析

目的 探讨老年人大肠息肉的临床特点及其与癌变的关系。方法 对我院经结肠镜检出的158例老年大肠息肉患者的临床特点进行回顾性分析，对其中120例进行1－6年（平均4．5年）的结肠镜随访，并与青中年组的437例患者相对照。结果 老年人大肠息肉的检出率、癌变率分别为30．0％及23．4％，均显著高于中青年组的10．2％及6．9％（P＜0．01），随年龄增长检出率有逐渐增加的趋势。分布以直肠和乙状结肠多见，但升结肠的癌变率（37．5％）明显高于左半结肠（14．3％，P＜0．05），且直肠、降结肠、横结肠及升结肠的癌变率也显著高于青中年组的同一部位（P＜0．01）；病理类型以腺瘤性息肉为多，占77．6％，也明显高于青中年组的同一病理类型（P＜0．01）。37例癌变息肉均为腺瘤性息肉，其中绒毛状腺瘤的癌变率（56．9％）显著高于管状腺瘤（3．4％，P＜0．01）。息肉体积大（＞2cm)、基底宽、数量多，癌变率高。腺瘤性息肉经内镜下摘除者其癌变率明显低于未摘除者（P＜0．01）。结论 老年人大肠息肉中的腺瘤性息肉的大小、形态、数量及病理类型是其癌变的主要危险因素，老年人应尽量行全结肠检查，检出大肠息肉者应尽可能首选肠镜下摘除，定期随访，减少癌变的机会。     

结直肠锯齿状腺瘤内镜表现和病理学特征分析

目的探讨锯齿状腺瘤（SA）内镜下表现和病理学特征。方法回顾分析滨州医学院附属医院2000年1月～2008年5月检出的大肠息肉病例,了解SA的检出率、内镜形态和病理学特征。结果8726例肠镜检查共检出大肠息肉1062例（1457枚）,检出率为12．17％,其中SA32例（60枚）,检出率为0．37％,占息肉构成比为3．01％。SA直径〉1cm者占21．63％,明显大于增生性息肉（8．57％）;SA表现为有蒂息肉所占的比例（8．33％）略高于增生性息肉（5．71％）,但都低于腺瘤性息肉（40．84％）。SA癌变率介于管状腺瘤和绒毛状腺瘤之间,接近于管状绒毛状腺瘤。结论SA内镜形态、病理学特点提示SA是兼有增生性息肉形态学特征和腺瘤性息肉组织学特点的息肉,具有恶变潜能.     

内镜诊疗大肠息肉951例结果分析

目的探讨大肠息肉的结肠镜表现特点及治疗。方法对951例大肠息肉患者的临床表现、结肠镜特点、镜下治疗、病理结果进行分析。结果951例大肠息肉：①临床表现无特异性；②肠镜表现位置以左半结肠居多，占79．2％，病检腺瘤性息肉占59．1％，其中癌变55例，癌变率为5．8％，内镜下完全切除33例（60％），不完全切除及可凝完全切除12例（30％）。结论结肠镜检查是诊断大肠息肉的最好方法，治疗大肠息肉的最佳手段，减少大肠息肉癌变的最有效措施。     

十年连续内镜检出1747例大肠息肉分析

目的研究近十年大肠息肉发生部位的变化及与性别、发病年龄及病理类型的关系。方法分析1995～2004年我院内镜中心检出并经病理证实的1747例大肠息肉。息肉发生部位按右半结肠、横结肠、左半结肠、直肠及多发性息肉统计。比较前5年（1995～1999）和后5年（2000～2004）结肠息肉解剖部位的变化。结果1995～1999年检出大肠息肉共591例，以左半结肠、直肠为主（38．6％、25．9％），右半结肠、横结肠和多发性息肉分别为9％、7．8％和18．7％。200～2004年检出大肠息肉明显增加，为l156例。仍以左半结肠和直肠息肉多见（37％、24．6％），右半结肠、横结肠和多发性息肉分别为11．9％、10．2％和16．3％。前后5年相比，大肠息肉解剖部位无明显变化（P〉0．05）。1747例结肠息肉中，男女之比为1．42：1；35～60岁年龄段发病比例高；病理类型以腺瘤性息肉为主（81．2％）。结论大肠息肉内镜检出例数增加迅速。近十年大肠息肉解剖部位无明显变化。息肉好发部位在左半结肠和直肠，以腺瘤性息肉为主。     

269例结直肠微小息肉内镜、病理特点和处理方式分析

结肠镜检查发现的结直肠息肉以直径≤5mm的微小息肉（DP）最为常见。目前关于DP内镜下处理方式的报道尚少。目的：分析结直肠DP的内镜、病理特点和处理方式,为其临床诊治提供参考。方法：收集2010年1月～2011年4月青岛市市立医院结肠镜检查病例的临床资料．纳人其中发现结直肠息肉并符合DP标准者．凡合并较大息肉（≥6mm）者予以排除。回顾性分析DP的内镜特点、病理性质和处理方式。结果：共纳入结直肠DP病例269例（402枚DP）,占同期息肉检出例数的21．8％,其中180例（66．9％）为单发。43．3％的DP分布于直肠、乙状结肠,60．0％的DP直径〉3mm,绝大多数DP形态为山田I型（53．5％）或山田Ⅱ型（42．0％）。305枚送病理检查的DP中．绝大多数为腺瘤性息肉（50．2％）或炎性息肉（47．5％）：〉3mm的DP为腺瘤性的可能性较大,≤3mm者多为非肿瘤性（P〈0．05）。66．9％的DP系以活检钳钳除：〉3mm、山田Ⅱ＋Ⅲ型和多发DP采用热活检钳钳除或高频电凝切除的可能性较≤3mm、山田I型和单发DP更大（P〈0．05）。结论：对于直径〉3mm的结直肠DP,行内镜下高频电凝切除可能更为有效,并应送病理检查,以免漏诊进展期腺瘤。     

大肠息肉表面结构与病理组织学的关系研究

目的：探讨大肠息肉表面结构形态与病理组织学的关系，以提高对大肠息肉的实时诊断及治疗水平。方法：对105例大肠息肉进行靛胭脂染色，放大内镜观察其表面结构形态，并参照Kudo法进行分类：I、Ⅱ型为非瘤性息肉，ⅢL、ⅢS、Ⅳ及混合型为腺瘤性息肉，V型为癌变，比较息肉表面结构与大体形态及病理之间的关系。结果：17例有蒂息肉中12例表现为I、Ⅱ型；40例亚蒂息肉和48例广基息肉中I、Ⅱ型分别为15．0％（6／40）和41．7％（20／48），ⅢL、ⅢS、Ⅳ、Ⅴ、混合型合计为85．0％（34／40）和58．3％（28／48）。83．8％（88例）的息肉位于直肠至脾曲结肠，息肉表型与其发生部位无关。炎性及增生性息肉中非瘤性表型为78．6％，瘤性表型为21．4％；腺瘤息肉中非瘤性表型为3．3％，瘤性表型为96．7％；幼年性息肉均为非瘤性表型。I、Ⅱ、ⅢL、ⅢS、Ⅳ、Ⅴ及混合型息肉中腺瘤发生率分别为0％、11．8％、77．3％、75．0％、100．0％、100．0％和70．0％。分型诊断瘤性和非瘤性息肉的敏感性为96．7％和80．0％，特异性为86．6％和94．7％，鉴别诊断准确率为89．5％。结论：用染色放大内镜分析大肠息肉表面结构，能有效鉴别大肠非瘤性息肉、腺瘤和癌，有助于在结肠镜检查的同时决定对病灶的处理。     

大肠息肉的临床分析

目的对于1985-01/1999-06我院结肠镜检查发现大肠息肉725例,计1772枚的内镜表现,病理所见及治疗进行回顾性分析.方法男512例,女213例,年龄24岁～86岁,平均51岁.主要临床表现为便血、腹部不适、腹泻、便秘,用结肠镜检查.结果息肉≤0.5 cm的占29%;直径0.6 cm～2.0 cm的占58%;直径>2.0 cm的占13%;息肉位于直肠32%;乙状结肠占33%;降结肠占14%;横结肠占12%;升结肠占5%;盲肠占4%.病理腺瘤样息肉占72%.结论大肠息肉多发于左半结肠,病理上以腺瘤样息肉多见.腺瘤样息肉应镜下切除     

结肠息肉与结肠癌的关系

目的探讨结肠腺瘤样息肉与结肠癌的关系．方法本文回顾性总结分析我院1985／1998间进行结肠镜2037例，其中检出腺瘤样息肉86例，检出率为4．22％．息肉高频电切除41例，切除率为47．6％．86例腺瘤样息肉中，男64例，女22例，年龄17岁～81岁结果息肉分布：直肠15例，占17．4％，乙状结肠32例，占37．20％，为多发，与结肠癌好发部位相一致．86例腺瘤样息肉13例癌变，癌变率为15．11％．息肉大小、形态及病理与癌变有明显的关系．腺瘤直径越大，癌变率越高，直径2cm以上的癌变率为61．11％，而1cm～2cm仅占6．06％在形态上无蒂息肉癌变率比例高，占18．6％．表面不光滑呈桑椹式分叶状，癌变率明显增高，达35％，是光滑息肉的四倍．病理上绒毛状腺瘤癌变率高，占35．7％，管状腺瘤癌变率仅占11．26％．腺瘤伴非典型增生与癌变成正相关，重度非典型增生癌变占87．5％．另外，息肉电切后送检病理不容忽视，4例腺瘤样息肉电切后病理为癌变；2例炎性增生性息肉电切后为腺瘤样息肉，1例为直肠类癌．结论结肠腺瘤样息肉与结肠癌有密切的关系，结肠腺瘤的大小、形态、病理类型及异型性增生是癌变的潜在因素，绒毛成分越多，异型性增生越重，体积越大，基底越宽，形态分叶其癌变危险性越高，应及早切除．同时注意电     

大肠侧向发育型肿瘤内镜下的诊断与治疗

目的探讨大肠侧向发育型肿瘤（LST）临床病理特征及内镜下黏膜切除术的有效性、安全性。方法经普通内镜检查发现LST 119例,染色后观察病灶大小及部位并进行形态分型,再结合放大内镜确定腺管开口类型。有治疗适应证者行内镜下黏膜切除术,切除病灶黏膜送病理检查。结果 28个月中共发现119例LST 124个病变。内镜下分型：颗粒均一型44个,结节混合型48个,平坦隆起型23个,假凹陷型9个。病变直径：10～20 mm 65个,21～30 mm 23个,31 mm以上36个,最大病变110 mm×100 mm。病变部位：直肠50个,乙状结肠25个,降结肠11个,横结肠10个,升结肠＋盲肠28个。黏膜腺管开口类型：Ⅲ型30个,其中17个为管状绒毛状腺瘤,12个为管状腺瘤;Ⅳ型56个,其中30个为绒毛状腺瘤,4个为黏膜内癌;Ⅴ型5个,其中2个为黏膜内癌,2个累及黏膜下层下1/3以下;Ⅱ型7个,其中5个为炎性增生性息肉,2个为锯齿状腺瘤（腺瘤性增生性息肉）：其余为ⅢL＋V型,其中23个为管状绒毛状腺瘤。符合适应证95例98个病变择期进行内镜下黏膜切除治疗,发生出血11例,均在操作过程中,无肠穿孔发生。结论大肠LST内镜形态具有一定特殊性,内镜下黏膜切除术是治疗在大肠的有效而安全的方法,可达到根治目的 。     

结直肠侧向发育型肿瘤内镜诊断与治疗

目的探讨结直肠侧向发育型肿瘤(LST)内镜诊断方法,经内镜黏膜切除术(EMR)、分片切除术(EPMR)、内镜黏膜下剥离术(ESD)方法治疗LST的疗效、安全性。方法 LST经色素染色放大内镜或NBI-ME观察病变形态、腺管开口分型(pit)及表面微血管分型(MP),分别进行EMR、EPMR、ESD或外科手术治疗,并分析LST的病理特点。结果在399例病人检出有LST,共407个病变。LST大小在10～80mm。LST部位在直肠128个(31.4%),乙状结肠97个(23.8%),降结肠54个(13.3%),横结肠67个(16.5%),升结肠21个(5.2%),盲肠36个(8.8%),回肠末段4例(1.0%)。LST形态呈颗粒均一型145个,结节混合型161个,扁平隆起型63个,假凹陷型38个。LST腺管开口分型以ⅢL和Ⅳ为多。405个LST经肠镜微创电切治疗,228个行EMR切除,165个行EPMR切除,12个行ESD切除,均在内镜下成功电切,另2例LST行外科手术治疗。出血发生率4.0%,术中即刻出血4例,术后3天迟发出血12例,无肠穿孔发生。LST病理结果:管状腺瘤46个(11.3%),管状绒毛状腺瘤146个(35.9%),绒毛状腺瘤181个(44.5%),增生性息肉10个(2.5%),高级别上皮内瘤变19个(4.7%),黏膜内癌3个(0.7%),黏膜下癌2个(0.4%)。术后复查肠镜无复发。结论色素染色放大内镜或NBI-ME方法有利于检出LST,EMR、EPMR、ESD是内镜下治疗LST安全有效的方法。     

225例结直肠锯齿状腺瘤的临床、内镜及病理学特征分析

目的探讨结直肠锯齿状腺瘤(serrated adenoma,SA)的临床、内镜及病理学特征。方法回顾性分析北京军区总医院消化内镜中心2009年1月-2013年10月检出的225例结直肠SA的临床、内镜及病理学资料。结果全部患者中男148例,女77例,年龄19~89岁,平均年龄(53.5±14.3)岁。以单发型多见(87.1%)。在同期结肠镜中的检出率为2.1%。内镜下形态以扁平型和广基型居多(64.3%、20.0%),多数病变直径在10 mm以下(83.1%);左半结肠和右半结肠的病变大小和形态分布的差异均有统计学意义(χ2=14.2662、12.2168,P0.05)。全部病例中广基锯齿状腺瘤息肉(SSA/P)30例(13.3%),非广基锯齿状腺瘤(包括增生性息肉、传统锯齿状腺瘤)195例(86.7%)。SSA/P中有20例位于右半结肠(66.7%),平均直径13.3 mm。其中6例SSA/P呈侧向发育型息肉,均位于升结肠及回盲部。伴腺上皮异型增生12例,另有3例腺瘤癌变。结论结直肠SA临床相对少见,内镜下形态及分布部位有其自身特点,尤其是SSA/P。有必要对结直肠SA进行明确分类,并对其发展、转归做长期随访研究。     

结直肠锯齿状腺瘤与传统腺瘤的内镜表现和病理学特征比较

目的通过分析结直肠锯齿状腺瘤（SA）和传统腺瘤的内镜和病理学特征的差异,加强对SA的认识。方法比较2008年6月至2013年10月天津医科大学总医院消化内镜中心检出的80例SA和160例传统腺瘤的一般情况、内镜表现和病理学特征。结果SA患者平均年龄比传统腺瘤患者小[（57．5±13．8）岁和（62．3±12．2）岁,P=0．0038],而男女性别构成,两组间差异无统计学意义（P〉0．05）。在内镜特征方面,SA主要发生于直乙结肠（60％）,传统腺瘤好发部位为直乙结肠（45％）、升结肠（20％）和降结肠（19％）,两组病变部位差异有统计学意义（P〈0．05）;在内镜形态分型（隆起型及表面型）和腺瘤大小方面比较,两组组间差异亦无统计学意义（P〉0．05）。在病理学方面,SA具有独特的锯齿状结构,传统腺瘤为管状、管状绒毛状和绒毛状结构。传统腺瘤的低级别瘤变率高于SA（P〈0．05）,但sA仍有约1．9％的局部恶变率。结论sA与传统腺瘤在年龄、发生部位和病理学特征方面存在差异,是一种独特的腺瘤类型,有一定恶变潜能,应引起临床和内镜医师的高度重视。     

溃疡性结肠炎相关腺瘤和结直肠癌回顾性临床病例分析

背景:研究表明溃疡性结肠炎(UC)患者发生结直肠癌的风险明显增加。目的:总结UC相关腺瘤和UC相关结直肠癌(UcCRC)的发病概况和临床病理特点。方法:选取2000年1月～2012年3月南京军区南京总医院住院确诊的UC患者603例,对其中UC相关腺瘤和UcCRC患者的性别、年龄、病程、临床症状、病理表现等临床资料进行回顾性分析经。结果:603例UC患者中,UC相关腺瘤28例,发病率为4.6%(28/603);UcCRC 4例,发病率为0.7%(4/603)。UC相关腺瘤患者的UC中位病程为3年,UcCRC患者的UC中位病程为29年。UC相关腺瘤好发部位依次为直肠/乙状结肠(16处)、降结肠(7处)、横结肠(6处)、升结肠以及回盲部(4处),UcCRC发病部位分别为升结肠(1例)、降结肠(2例)、乙状结肠(1例)。UC相关腺瘤和UcCRC的临床症状与一般UC相似。结论:UC相关腺瘤和UcCRC的发病率随UC病程的延长而增加。长期病程的UC患者应定期行结肠镜检查,对预防和早期检出结直肠癌具有积极意义。     

内镜分片黏膜切除术治疗巨大结直肠平坦型病变的临床评价及复发率随访

目的评价内镜分片黏膜切除术(endoscopic piecemeal mucosal resection,EPMR)治疗巨大结直肠平坦型病变的疗效、安全性及应用价值,并随访观察其复发率。方法经术前内镜检查评估及病理证实,符合内镜切除适应证,采用EPMR切除46例直径≥30 mm结直肠平坦型病变,均为侧向发育型肿瘤(LST),术后标本全部行精确的病理学评价。结果 46例结直肠LST患者中,病灶位于直肠38例,占82.6%,完全切除率93.5%(43/46),切除治愈率97.8%(45/46)。术后出血发生率为4.3%,均经内镜止血成功,无1例发生穿孔。术后病理均为腺瘤,伴低级别上皮内瘤变30例,伴高级别上皮内瘤变10例,黏膜内癌6例。全组患者随访3~96个月,仅2例复发,复发率4.3%,再次内镜处理获愈。结论 EPMR是治疗巨大结直肠平坦型病变安全、有效的方法,掌握切除方法和技巧,可以完全切除病变,减少残留及复发率。     

Serrated lesions of the colorectum: review and recommendations from an expert panel

Serrated lesions of the colorectum are the precursors of perhaps one-third of colorectal cancers (CRCs). Cancers arising in serrated lesions are usually in the proximal colon, and account for a disproportionate fraction of cancer identified after colonoscopy. We sought to provide guidance for the clinical management of serrated colorectal lesions based on current evidence and expert opinion regarding definitions, classification, and significance of serrated lesions. A consensus conference was held over 2 days reviewing the topic of serrated lesions from the perspectives of histology, molecular biology, epidemiology, clinical aspects, and serrated polyposis. Serrated lesions should be classified pathologically according to the World Health Organization criteria as hyperplastic polyp, sessile serrated adenoma/polyp (SSA/P) with or without cytological dysplasia, or traditional serrated adenoma (TSA). SSA/P and TSA are premalignant lesions, but SSA/P is the principal serrated precursor of CRCs. Serrated lesions have a distinct endoscopic appearance, and several lines of evidence suggest that on average they are more difficult to detect than conventional adenomatous polyps. Effective colonoscopy requires an endoscopist trained in the endoscopic appearance of serrated lesions. We recommend that all serrated lesions proximal to the sigmoid colon and all serrated lesions in the rectosigmoid >5?mm in size, be completely removed. Recommendations are made for post-polypectomy surveillance of serrated lesions and for surveillance of serrated polyposis patients and their relatives.     

Cronkhite-Canada syndrome containing colon cancer and serrated adenoma lesions

We describe a case of Cronkhite-Canada syndrome associated with sigmoid colon cancer, and provide a literature review. A 77-year-old man was diagnosed with sigmoid colon cancer after presenting with hypoproteinemia, nail atrophy, loss of scalp hair, hyperpigmentation, and gastrointestinal polyposis. The findings were consistent with Cronkhite-Canada syndrome. The colon polyps were histologically serrated adenomas, whose crypts showed a saw-toothed growth pattern with dysplasia, or tubular adenoma. Cronkhite-Canada syndrome associated with colon cancer has been reported in 31 cases. The availability of histologic material permitted reexamination of 25 of these cases. Serrated adenoma of the polypoid lesions was retrospectively found in 10 (40%) of the 25 cases. By comparison, the incidence of serrated adenomas has been estimated to occur in about 1% of all general polyps. Taken together, it is suggested that Cronkhite-Canada syndrome associated with colorectal cancer frequently has polyps containing serrated adenoma lesions. In the case described here, microsatellite instability and overexpression of the p53 protein were found in the cancer lesion and serrated adenoma lesions, and none of the lesions showed a loss of heterozygosity of various genes or K-RAS mutations. Thus, genetic alterations between the serrated adenoma and the colorectal cancer was correlated in this case. These findings suggested the possibility of a serrated adenoma-carcinoma sequence in this case of Cronkhite-Canada syndrome.     

Comparison of malignant potential between serrated adenomas and traditional adenomas

BACKGROUND: Serrated adenoma is a discrete colorectal epithelial neoplastic lesion that can evolve into colorectal cancer. However, the degree of malignant potential has not been firmly established as yet. The purpose of the present paper was to compare the malignant potential and clinicopathological features between serrated and traditional adenomas. METHODS: A total of 124 serrated adenomas from 116 patients were assessed, and 419 traditional adenomas from 200 were randomly selected. The combination of nuclear dysplasia and serration of > or =20% of crypts was regarded as serrated adenoma. The clinicopathological features of serrated and traditional adenomas were compared, and multivariate analysis performed to confirm whether the malignant potential of serrated adenoma was similar to that of traditional adenoma. RESULTS: The differences in age, sex, total number of adenomas, and synchronous lesions including adenoma with high-grade dysplasia and carcinoma between subjects with and without serrated adenoma were not significant. Serrated adenomas were more frequently located in the rectum and sigmoid colon (P < 0.001), and the average size of serrated adenomas was greater than that of traditional adenomas (P < 0.05). The incidence of malignant lesions including high-grade dysplasia and carcinoma in serrated adenomas was found to be lower than in traditional adenomas (3.2% vs 9.3%, P < 0.05). In the multivariate analysis, adenoma type and polyp size constituted the risk factors for the incidence of high-grade dysplasia and carcinoma. CONCLUSIONS: Serrated adenoma is a premalignant lesion, but it has a lower potential for the development of malignancy than traditional adenomas.     

Sporadic adenoma in ulcerative colitis: endoscopic resection is an adequate treatment

BACKGROUND AND AIMS: In studies with small numbers of cases, it has been shown that endoscopic resection of adenomas in ulcerative colitis represents adequate treatment. In a larger study cohort with more prolonged follow up, we assessed the reliability of this finding. METHODS: Between 1988 and 2002, 148 consecutive patients, mainly from private gastroenterologists' practices, with ulcerative colitis were diagnosed as having an adenoma. In 60 patients, histological diagnosis was established in biopsies and in 87 patients in polypectomy specimens; one patient underwent proctocolectomy following diagnosis. The outcome of these patients was analysed after a mean follow up period of 6.0 (3.63) years. RESULTS: Among 60 patients, surprisingly without endoscopic treatment, 48.3% developed ulcerative colitis associated neoplasia in the same colon segment (23.3% low grade intraepithelial neoplasia; 8.3% high grade intraepithelial neoplasia; 16.7% carcinoma). Among 87 patients undergoing polypectomy of the adenoma, follow up revealed colitis associated neoplasia in other segments of colon in 4.6% of cases. CONCLUSION: Development of adenocarcinomas in a total of 6.7% of the overall patient group, and in 2.3% of those undergoing polypectomy, indicates that biopsy based diagnosis of an adenoma in ulcerative colitis must be considered to mandate endoscopic resection of the lesion; 40% of affected patients did not receive any form of endoscopic removal of the lesion. This shows that the most recent guidelines are not followed in a considerable number of patients with ulcerative colitis in private practice in Germany. Although polypectomy of the adenoma represents adequate therapy, further regular follow up examinations are nevertheless necessary.