内镜下黏膜切除术治疗消化道难治性息肉的疗效分析

[目的]分析比较内镜黏膜切除术(EMR)与单纯高频电切术治疗消化道难治性息肉的临床疗效和安全性。[方法]入选80例(139枚)难治性消化道息肉患者,按照息肉切除方式,分成EMR组38例(67枚)和电切组42例(72枚),观察2组治疗术中、术后并发症及处理情况。[结果]EMR组完整切除率为97.4%,显著高于电切组的76.1%;而电切组总并发症发生率35.7%明显高于EMR组的10.5%(P0.05)。[结论]消化道难治性息肉行EMR治疗与传统单纯高频电切术治疗比较,具有操作简便、并发症少等特点,是一种安全有效的微创内镜治疗手段。     

内镜黏膜切除术治疗结肠广基息肉临床疗效分析

目的分析结肠息肉的临床病理特点以及应用内镜黏膜切除术治疗结肠广基息肉的有效性和安全性。方法收集我院2012年8月到2014年1月由结肠镜诊断经内镜黏膜切除术(EMR)进行息肉切除的324例结肠息肉患者的临床资料,所切除息肉均符合EMR指征。观察手术并发症、处理措施和术后病理结果,分析EMR治疗结肠息肉的完整切除率、并发症发生率及复发率。结果共切除463枚息肉,直径6~45 mm,大于20 mm的息肉共65枚;息肉最易发生部位为直肠;病理类型以管状腺瘤最为多见。除2例不完全切除外均完整切除,标本完整切除率为99.6%。术中及术后并发症发生率2.6%,其中消化道出血7例(1.5%),以腹痛为主要表现的息肉切除术后综合征5例(1.1%),无消化道穿孔。直径大于20 mm的息肉EMR术后12个月复查肠镜,无复发。结论采用EMR治疗即使是直径大于20 mm的结肠息肉也是安全、有效的首选方法。     

改良内镜黏膜切除术治疗结肠扁平息肉的临床应用

目的 评价改良内镜黏膜切除术(M-EMR)治疗结肠扁平息肉疗效。方法 将276例297枚结肠扁平息肉患者随机分成两组：EMR组136例共152枚息肉,M-EMR组140例共145枚息肉。病灶黏膜下注射生理盐水后,EMR组一次性切除病灶,M-EMR组在病灶周边用圈套器头端切开周边黏膜后一次性切除病灶,回收全部标本送病理检查。比较术后两组并发症发生率,手术时间,完整切除率,术后复发率。结果 全部息肉一次性切除。EMR组1例迟发出血,1例穿孔,1例电凝综合征,并发症发生率2.0%(3/152);M-EMR组1例迟发出血,1例电凝综合征,并发症发生率1.4%(2/145)。EMR组息肉切除时间平均(5.6±2.0)min;M-EMR组息肉切除时间平均(5.7±2.1)min,2组无显著差异(p>0.05)。EMR组息肉完整切除率92.1％(140／152),M-EMR组息肉完整切除率100％(145／145),2组显著差异(p<0.05)。术后病理：管状腺瘤135例,绒毛状腺瘤40例,绒毛管状腺瘤57例,增生性息肉29例,炎性息肉34例。腺瘤伴高级别类瘤变8例,其中EMR组1例息肉残留,后行肠段切除,6个月后8例复查无复发。M-EMR组2例黏膜内癌,完整切除,6个月后复查无复发。EMR组12例术后残留,1例手术,11例APC处理后,1例6个月复发,复发率0.66%(1／152),M-EMR组无复发。结论 M-EMR组较EMR组治疗结肠扁平息肉更有效。     

改良型水辅助结肠镜下结直肠息肉黏膜切除术的临床应用研究

背景内镜黏膜切除术(endoscopic mucosal resection, EMR)广泛用于结直肠息肉切除,但其黏膜下注射可延展病灶,使之难以被圈套器套入.注水内镜黏膜切除术(underwaterendoscopicmucosalresection,UEMR)需吸气后以水浸没息肉,有时影响息肉暴露.改良型UEMR将EMR与UEMR优点合二为一,有利于息肉整块切除.目的探讨改良型UEMR提高结直肠息肉整块切除率、减少复发率和并发症的可行性及效果.方法选取2015-07/2019-06在我院内镜科行改良型UEMR治疗的59例结直肠息肉及同期行UEMR治疗43例的结直肠息肉患者为研究对象,改良型UEMR治疗的59例研究组共发现76个病灶, UEMR治疗的43例对照组共发现65个病灶.巴黎分型均为(Is、Ⅱ),息肉大小在1cm直径3cm.手术方式:退镜观察发现息肉后向肠腔内注入温生理盐水,完全浸泡息肉,将息肉置于6点钟方向,黏膜下注射美兰抬起病灶,采用合适的圈套器予以电切除,创面视病灶大小给予钛夹夹闭,切除的标本结晶紫染色后送病理.结果59例研究组的患者均成功完成改良型UEMR,76例息肉中64例息肉2cm,均行整块切除;12例息肉2-3cm有5例整片切除,7例行注水分片粘膜切除术(underwaterendoscopicpiecemealmuscosalresection,UEPMR).研究组总整块切除率为91%,2cm整块切除率为100%, 2-3 cm整块切除率为42%. 43例对照组的患者也均成功完成UEMR, 65例息肉中58例息肉2cm,其中49例患者一次性切除,9例出现息肉残留追加氩等离子体血浆凝固术(argon plasma coagulation,APC)治疗;7例息肉大小2-3cm,有2例整片切除,1例出现息肉残留追加APC治疗,另外5例行UEPMR或转内镜黏膜下剥离术切除.对照组整块切除率为76%,2cm整块切除率为84%,2-3cm整块切除率为14%.改良型UEMR研究组有9例患者术中出现少量渗血,UEMR对照组中13例患者术中出现出血,采用热活检钳烧灼或钛夹钳夹止血.两组术后均未发生迟发性出血、穿孔等并发症.随访期间研究组发现2例切除部位息肉复发,均为分片切除术后,对照组UEMR有9例切除部位息肉复发.结论改良型UEMR使用水中注射液体垫不仅可以清晰暴露息肉大小边界,选择合适的圈套器,达到整块切除.同时液体垫垫高息肉,水中间断性吸引可以使圈套器更完整套住息肉的根部,相对于UEMR,改良型UEMR是结直肠息肉安全、有效的治疗方法,完整切除率高、复发率低,应用效果良好,值得临床推广.     

内镜下黏膜剥离术治疗消化道黏膜增生性病变88例分析

目的探讨内镜下黏膜剥离术(ESD)治疗消化道黏膜增生性病变的临床疗效。方法将宜兴市人民医院收治的消化道黏膜增生性病变患者88例,随机分成内镜下黏膜切除术(EMR)组(44例)和ESD组(44例)。术后随访12个月,观察两组的临床疗效及穿孔、出血等并发症及复发情况。结果与EMR组比较,ESD组的手术时间明显增加,但一次性切除率明显升高(P0.05);术后6个月,ESD组切面愈合率显著高于EMR组(P0.05),ESD组术后12个月的复发率显著低于EMR组(P0.05)。结论与EMR相比,ESD治疗消化道黏膜增生性病变的一次性切除率和术后切面愈合率均较高,且术后12个月的复发率较低。     

静脉麻醉内镜下黏膜切除术的疗效观察

[目的]观察静脉麻醉内镜下黏膜切除术(EMR)的疗效.[方法]对经超声内镜检查确诊未侵犯黏膜下层的40例消化道隆起和平坦型病变进行静脉麻醉EMR,术后所有病例均留标本再次行病理检查,并内镜随访.[结果]40例均完全切除,无一例出现大出血、迟发出血、穿孔等不良并发症,术后1、3、6、12个月复查内镜,除2例肠息肉患者息肉复发再次给予EMR治疗外,余患者未见病灶残留或复发.[结论]EMR是安全、有效、简便实用的,配合静脉麻醉效果更好,适用范围更大,值得临床推广.     

内镜下黏膜切除术治疗老年人大肠息肉

目的 研究内镜下黏膜切除术(EMR)对老年人大肠息肉的治疗效果,并对其临床病理特征、适应证、并发症等进行讨论.方法 2003年10月至2008年10月共完成老年人大肠息肉EMR手术277例,共计413枚.对切除标本进行病理组织学观察,术后定期内镜随访1～60月,以评价切除效果,记录术中及术后发生的并发症及处理情况.结果 413枚息肉中393枚经首次或再次EMR治疗病变完整清除,治愈率为95.2%;15枚(占3.6%,15例患者)术后病理示浸润癌再追加外科开腹手术.术中出血16例(5.8%),均内镜下止血成功;术后迟发出血5例(1.8%),其中3例经内镜下止血成功,2例经输血及内科保守治疗后出血停止.无穿孔、感染及其他并发症发生.病理结果示炎性息肉、增生性息肉、腺瘤性息肉、腺瘤癌变分别占25.7%(106/413),19.1%(79/413),50.4%(208/413),4.8%(20/413),老年人随着年龄的增加,腺瘤性息肉的比例逐渐升高(P＜0.01).随访期间所有病例均无复发.结论 EMR是一种安全和微创的内镜治疗手段,对老年人大肠息肉治疗的效果优于传统的内镜下治疗方法.     

内镜下套扎及电凝切除术治疗消化道广基息肉

目的探讨内镜下采用尼龙圈套扎和联合电凝电切除消化道广基息肉的临床疗效。方法 82例消化道广基息肉患者,随机分为两组,治疗组通过内镜下尼龙圈套扎联合电凝切除息肉,对照组行单纯内镜下电凝切除息肉,观察并随访其术后疗效。结果治疗组一次性治疗成功率为98.1%,对照组为88.4%。结论对于消化道广基息肉内镜下尼龙圈套扎联合电凝治疗成功率高,并发症少,安全有效,值得临床推广。     

内镜下黏膜切除术(EMR)治疗溃疡性结肠炎合并息肉的临床应用

目的观察探讨内镜下黏膜切除术(endoscopic mucosal resection,EMR)在溃疡性结肠炎并发息肉治疗中的应用,分析该方法的优势及治疗效果。方法回顾性分析2007年1月至2011年12月我院消化科收治的28例溃疡性结肠炎并发息肉患者,所有患者均行EMR治疗,分析息肉分布,病理类型,EMR术后溃结症状缓解率,EMR治疗的并发症,息肉复发率,并进行定期复查肠镜及随访调查情况。结果 28例行内镜治疗病人均愈合良好,无穿孔及出血等并发症及息肉同部位复发情况发生,配合美沙拉嗪等综合治疗,患者脓血便及腹痛等症状明显好转,复发减少。结论常规肠镜活检后明确诊断的病人,实施EMR治疗息肉、溃疡性结肠炎症状好转,息肉复发减少,不失为首选治疗方法。     

EMR与ESD治疗早期消化道肿瘤的有效性及安全性分析

目的探讨和评价内镜下黏膜切除术(EMR)和内镜黏膜下剥离术(ESD)治疗早期消化道肿瘤的临床疗效和安全性,为消化道肿瘤内镜下治疗方式的选择提供依据。方法收集我院2015年1月至2017年9月收治的102例早期消化道肿瘤患者,根据治疗方式分为观察组(ESD治疗)45例和对照组(EMR治疗)57例,比较两组患者的整块切除率、完全切除率、病灶大小、手术时间、术中出血、住院时间及手术并发症。结果观察组整块切除率为95.6%,完全切除率为86.7%,切除病灶的中位数为2.4 cm,这三项指标均显著大于对照组(P0.05)。对照组手术中位时间为29 min,术中出血发生率为3.4%,住院平均时间为4.9 d,这三项手术指标均显著小于观察组(P0.05);观察组术后腹部不适发生率为28.9%,术后出血率为26.7%,此两项手术并发症发生率高于对照组(P0.05)。结论 ESD术治疗早期消化道肿瘤在切除率的临床效果方面优于EMR术,但安全性较差,手术时间长、出血等并发症的发生情况有待改善,值得进一步探索。     

内镜下黏膜切除术治疗Peutz-Jeghers巨大十二指肠息肉71例临床研究北大核心CSCD

目的评估内镜下黏膜切除术(EMR)治疗Peutz-Jeghers综合征(PJS)巨大十二指肠息肉的安全性及有效性。方法收集2013年2月至2020年8月在空军特色医学中心确诊为PJS十二指肠息肉并经EMR治疗的病例资料,统计EMR治疗PJS十二指肠巨大息肉的完整切除率、并发症发生率。比较巨大息肉组(直径≥3 cm)与普通息肉组(直径<3 cm)患者EMR手术完整切除率和并发症发生情况,并分析EMR治疗PJS十二指肠息肉手术并发症发生的影响因素。结果共71例患者纳入研究,男44例,女27例,中位年龄为26岁(5~58岁)。内镜下切除息肉最大中位直径为2.0 cm(0.6~13.0 cm),所有患者均成功实施EMR手术,63例患者EMR治疗PJS十二指肠息肉实现完整切除(63/71,88.7%),巨大息肉组EMR手术完整切除率低于普通息肉组(77.4%比97.5%),差异有统计学意义(P=0.023)。EMR手术相关并发症总发生率5.6%(4/71),1例患者同时存在术中创面渗血和术后胰腺炎。巨大息肉组与普通息肉组间并发症发生率(9.7%比2.5%)差异无统计学意义(P>0.05)。内镜下EMR切除十二指肠息肉有无并发症发生在患者性别、年龄、有无PJS家族史、手术史、息肉数量、切除方式上的差异均无统计学意义(P值均>0.05),而息肉位于乳头部位者并发症发生率(50%,3/6)显著高于非乳头部位者(1.5%,1/65),差异有统计学意义(P=0.001)。结论EMR治疗PJS巨大十二指肠息肉总体安全有效的,可作为PJS十二指肠息肉的首选治疗方案。息肉部位是EMR手术相关并发症发生的重要影响因素。     

Endoscopic mucosal resection of 161 cases of large sessile or flat colorectal polyps

OBJECTIVE: Large sessile or flat colorectal polyps, which are traditionally treated surgically, may be amenable to endoscopic mucosal resection (EMR), often using a piecemeal method. Appropriate selection of lesions and a careful technique may enhance the efficacy of EMR for polyps >or=20 mm in diameter without compromising safety. The aim of this study was to identify the factors that may be predictive of the risk of polyp recurrence. MATERIAL AND METHODS: A retrospective analysis was conducted on the outcome of 161 polyps >or=20 mm in diameter, treated by piecemeal EMR at a single centre using the "lift and cut" technique. All records were reviewed for polyp size, site, morphology and histology. Polypectomy technique, patient follow-up, polyp recurrence and surgical interventions were also recorded. RESULTS: Over an 8-year period, 161 colonic polyps measuring >or=20 mm were removed by EMR. Follow-up data were available for 149 cases (93%) with a mean polyp diameter of 32.5 mm; the total success rate of endoscopic polyp removal was 95.4%. The number of cases requiring 1, 2, 3, 4 and 6 attempts at EMR was 89 (60%), 36 (24%), 14 (9%), 2 (1.3%) and 1 (0.7%), respectively. Recurrence was significantly related to polyp size (p<0.001). There was no statistically significant relationship between site and recurrence. Seven patients (4.6%) underwent surgical intervention after EMR because of failed clearance. There were no post-EMR perforations and significant bleeding was reported in only two patients (1.7%). CONCLUSIONS: With careful attention to technique, piecemeal EMR is a safe option for the resection of most sessile and flat colorectal polyps >or=20 mm in size. A stricter follow-up may be required for larger lesions because of a higher risk of recurrence.     

内镜下黏膜切除术治疗消化道肿瘤

目的 探讨内镜下黏膜切除术(EMR)对消化道肿瘤的治疗价值。方法 利用染色、放大内镜及超声内镜探测病变范围及侵犯深度,对位于黏膜层及黏膜肌层的早期癌、癌前病变、黏膜下肿瘤、侧向发育型息肉、无蒂或亚蒂巨大息肉、息肉癌变等病变行EMR治疗。结果 病灶最大直径6cm。2例早期食管癌、1例早期贲门癌、1例早期大肠癌及2例胃中、重度异型增生经EMR及透明帽负压吸引EMR切除,观察3-18个月无复发;31例黏膜下肿瘤经EMR和透明帽负压吸引EMR,均完全切除;对13例侧向发育型息肉及21例亚蒂和无蒂大息肉及局部癌变息肉采用EMR或分片黏膜切除术切除。术中出血5例,出血率7.04％,经内镜治疗停止。1例4.5 cm腺瘤术后3个月复发。结论 在超声内镜、色素内镜及放大内镜的指导下,采用内镜下黏膜切除术治疗部分消化道早期癌、癌前病变、侧向发育型及无蒂或亚蒂臣大息肉、局部癌变息肉及黏膜肌层的肿瘤,足一项安全有效的内镜治疗疗法。     

内镜下黏膜切除术治疗大肠平坦型病变30例

目的：探讨内镜下黏膜切除术（EMR）在大肠平坦型病变中的治疗价值。方法：对30例有大肠平坦型病变患者共36处病灶进行染色放大后行EMR治疗,评价其治疗效果和并发症。结果：36处病灶最大直径0．8～2．5cm（平均1．4±0．5cm）,32处一次性完整切除,4处分块切除;3例出现术中出血,经氩气凝固术（APC）及电凝治疗后止血,1例出现术后迟发性出血,经金属夹治疗后止血。30例患者术后1月复查肠镜,创面愈合,术后随访6～12月（平均9．3月）,未见病变复发及残留。结论：EMR能有效治疗大肠平坦型病变,方法简便易行,创伤小,安全有效,值得临床推广。

Abstract：

Objective： To study the value of endoscopic mucosal resection （EMR） for flat-type colorectal polyps. Methods： Thirty-six lesions in 30 patients with flat-type colorectal polyps were resected by EMR after magnifying endoscope and mucosa staining, and the therapeutic effects and adverse reactions were evaluated. Results： The maximum diameter of 36 lesions was 0. 8-2. 5 cm （mean 1.4 ± 0. 5 cm） ,32 lesions of which were onetime complete resection and four lesions were piece EMR. Bleeding occurred in 3 cases, and the Argon Plasma Coagulation （APC） and electrocoagulation were taken to stop bleeding, 1 case of delayed postoperative bleeding,metal clips was used to stop bleeding after treatment. The colonoscopy after a month in 30 patients showed wound healing, no recurrence and residual lesions were found in these patients followed up for 6- 12 months （average 9. 3 months）. Conclusions： Colorectal flat-type polyps can be effectively treated by EMR, and the method is simple, less traumatic, but safe and worthy to be popularized.     

内镜下黏膜切除术治疗消化道平坦型病变103例分析

目的回顾分析内镜下黏膜切除术（EMR）对消化道平坦型病变的治疗效果，并讨论其并发症和操作方法。方法103例共114处消化道平坦型病变，以注射法或透明帽辅助法行黏膜切除治疗，记录其操作方法、并发症、术后病珲类型及随访情况。结果113处病变经EMR或EPMR完整切除，治愈率99．12％。并发症：术中出血7例（6．80％），以APC止血成功。术后迟发出血1例（0．97％），内科保守治疗成功，无穿孑L发生。术后病理：良性腺瘤73处，黏膜肌层平滑肌瘤5处，乳头状瘤2处，增生性息肉11处，炎性息肉17处，黏膜内癌（m癌）3处，黏膜下层癌（sml癌）2处，同有肌层癌（nap癌）1处。sml癌追加外科肠段切除，手术标本未见肿瘤残存或浸润。mp癌行黏膜下注射后抬举征可疑阳性，术后追加外科肠段切除，可见肠旁淋巴结转移（1／6）。癌变病例随访3～9月，未见病变残留或复发。结论镜下黏膜切除术可安全有效切除大多数消化道平坦型病变。〉10min病变术后应常规作病理检查。采用纯切模式，较大功率有助于保持标本完整性。     

内镜治疗111例胃息肉的临床病理特征分析

背景：胃息肉的检出率逐年增高,其临床症状不明显且有一定癌变倾向。目的：了解胃镜下胃息肉的临床和病理特征。方法：对2010年1月～2013年1月新疆医科大学第一附属医院检出的111例胃息肉患者的内镜、病理资料和手术情况进行回顾性分析。结果：本组老年患者（≥60岁）为胃息肉高发人群（56．8％）;单发性息肉80例（72．1％）,多发性息肉31例（27．9％）;息肉主要位于胃体（52．3％）;息肉直径≤0．5cm多见（69．4％）;息肉类型主要为增生性息肉（40．5％）和炎性息肉（33．3％）。息肉治疗以活检钳钳除30例,内镜黏膜下注射0．9％NaCl溶液联合高频电切摘除54例,内镜下黏膜切除术（EMR）治疗6例,内镜黏膜下剥离术（ESD）治疗4例,余17例行外科手术治疗。12例患者接受随访,其中2例复发。结论：胃息肉直径较小,多为单发;息肉主要位于胃体,以增生性息肉和炎性息肉为主;治疗方式多选择内镜下切除,息肉切除后有复发的可能性,应加强随访。     

Endoscopic mucosal resection of 161 cases of large sessile or flat colorectal polyps

Objective. Large sessile or flat colorectal polyps, which are traditionally treated surgically, may be amenable to endoscopic mucosal resection (EMR), often using a piecemeal method. Appropriate selection of lesions and a careful technique may enhance the efficacy of EMR for polyps ≥20 mm in diameter without compromising safety. The aim of this study was to identify the factors that may be predictive of the risk of polyp recurrence. Material and methods. A retrospective analysis was conducted on the outcome of 161 polyps ≥20 mm in diameter, treated by piecemeal EMR at a single centre using the “lift and cut” technique. All records were reviewed for polyp size, site, morphology and histology. Polypectomy technique, patient follow-up, polyp recurrence and surgical interventions were also recorded. Results. Over an 8-year period, 161 colonic polyps measuring ≥20 mm were removed by EMR. Follow-up data were available for 149 cases (93%) with a mean polyp diameter of 32.5 mm; the total success rate of endoscopic polyp removal was 95.4%. The number of cases requiring 1, 2, 3, 4 and 6 attempts at EMR was 89 (60%), 36 (24%), 14 (9%), 2 (1.3%) and 1 (0.7%), respectively. Recurrence was significantly related to polyp size (p<0.001). There was no statistically significant relationship between site and recurrence. Seven patients (4.6%) underwent surgical intervention after EMR because of failed clearance. There were no post-EMR perforations and significant bleeding was reported in only two patients (1.7%). Conclusions. With careful attention to technique, piecemeal EMR is a safe option for the resection of most sessile and flat colorectal polyps ≥20 mm in size. A stricter follow-up may be required for larger lesions because of a higher risk of recurrence.     

黏膜切除术治疗结直肠广基隆起性腺瘤性息肉98例临床研究

目的探讨内镜下黏膜切除术(endoscopic mucosal resection,EMR)治疗结直肠广基隆起性腺瘤性息肉患者的疗效。方法回顾性分析98例结直肠广基隆起性腺瘤性息肉(息肉直径0.6~2.0 cm)患者的临床资料并行EMR治疗。结果 98例均经电子结肠镜检查及术前病理诊断为腺瘤性息肉,均为广基隆起性病变,共120枚,行EMR,留取完整标本病理检查,创面均给予钛夹封闭。术后病理诊断为腺瘤性息肉113例,高级别瘤变4例,局部癌变3例,7例切缘均无癌细胞,未追加外科手术。1个月后复查见病变部位黏膜光滑,未见息肉及病变黏膜残留。高级别瘤变及局部癌变7例随访3年,未见肿瘤复发及它处转移。结论对于广基隆起性腺瘤性息肉行EMR较既往单纯的高频电灼或氩离子凝固术有助于发现早期癌,改善患者的预后。     

Endoscopic mucosal resection of large hyperplastic polyps in 3 patients with Barrett＇s esophagus

AIM: To report the endoscopic treatment of large hyperplastic polyps of the esophagus and esophago-gastric junction (EGJ) associated with Barrett's esophagus (BE) with low-grade dysplasia (LGD), by endoscopic mucosal resection (EMR). METHODS: Cap fitted EMR (EMR-C) was performed in 3 patients with hyperplastic-inflammatory polyps (HIPs) and BE. RESULTS: The polyps were successfully removed in the 3 patients. In two patients, with short segment BE (SSBE) (<= 3 cm), the metaplastic tissue was completely excised. A 2 cm circumferential EMR was performed in one patient with a polyp involving the whole EGJ. A simultaneous EMR-C of a BE-associated polypoid dysplastic lesion measuring 1 cm multiply 10 cm, was also carried out. In the two patients, histologic assessment detected LGD in BE. No complications occurred. Complete neosquamous re-epithelialization occurred in the two patients with SSBE. An esophageal recurrence occurred in the remaining one and was successfully retreated by EMR. CONCLUSION: EMR-C appears to be a safe and effective method for treating benign esophageal mucosal lesions, allowing also the complete removal of SSBE.     

Hamartomatous inverted polyp successfully treated by endoscopic submucosal dissection

We report a case of gastric hamartomatous inverted polyps that are a rare histological type of gastric polyp and difficult to diagnose. Gastric submucosal tumor was detected by upper gastrointestinal X-ray series in 37-year-old man. Endoscopy revealed a submucosal tumor (SMT) , which eroded with a depression on its surface in the fornix. Endoscopic ultrasonography showed a heterogeneous tumor in the third layer. Endoscopic submucosal dissection (ESD) was performed to resect the tumor completely. The pathological diagnosis was a gastric hamartomatous inverted polyp. The patient was later discharged without any complications. Hamartomatous inverted polyps without a stalk are classified as the SMT type because the tumor is inverted down growth into the submucosal layer, otherwise polyps with a stalk are classified as the polyp type. All of the polyps were resected endoscopically, however, surgical resection was performed for those of the SMT type, because it is difficult to remove this type completely by en-block resection using conventional EMR technique. ESD method may be indicated for SMT-type hamartomatous inverted polyps.