超声内镜及内镜黏膜下剥离术对直肠类癌的诊疗价值

目的探讨超声内镜(EUS)对直肠类癌治疗的指导价值,及内镜黏膜下剥离术(ESD)对直肠类癌治疗的安全性及有效性。方法对临床考虑直肠类癌的患者进行EUS检查,根据EUS结果选择适合的治疗方案。结果 45例术前病理确诊的类癌病例,42例经ESD治疗,2例累及固有肌层及1例浸透浆膜层并伴有周围淋巴结转移者,经外科手术治疗。结论 EUS能够明确直肠类癌的大小、浸润深度、有无周围淋巴结肿大,对其治疗有较高的指导价值。对于小于20 mm直肠类癌,ESD是一种安全、有效的方法。     

超声内镜在胃黏膜下肿瘤诊断中的局限性*

目的评估超声内镜(EUS)对胃黏膜下肿瘤(SMTs)的诊断价值,并分析胃SMTs的EUS下特点。方法收集2008年9月-2016年12月614例于该院内镜中心经EUS检查后行内镜黏膜下剥离术(ESD)切除治疗的胃SMTs患者资料纳入回顾性研究。病变起源层次以ESD术中诊断为金标准,病变类型以术后病理学及免疫组化结果为金标准,统计EUS诊断的符合率,并分析EUS结果。结果 EUS对病变起源的诊断与ESD术中结果的符合率为91.25%,其中起源于黏膜肌层、黏膜下层和固有肌层的诊断符合率分别为66.67%、80.85%和94.50%;对病变类型的诊断与ESD术后病理结果的符合率为65.99%,其中胃肠间质瘤(GIST)、平滑肌瘤、异位胰腺和脂肪瘤的诊断符合率分别为91.85%、18.56%、79.76%和90.70%。结论 EUS能初步判断胃SMTs的起源层次与病变类型,可为内镜下治疗提供较为准确的依据,但对诊断平滑肌瘤、错构瘤、炎性纤维性息肉、类癌和纤维瘤等少见病变存在一定的局限性。因此,必要时应积极地切除病变,以明确诊断,防止恶变。     

超声内镜对结直肠黏膜下病变的诊断价值

目的探讨超声内镜(EUS)在结直肠黏膜下病变诊断和治疗中的作用。方法对结直肠黏膜下病变进行EUS检查。根据黏膜下病灶的起源层次,部分患者接受深挖活检、超声内镜引导下细针穿刺吸取活检术(EUS-FNA)、内镜下治疗或外科手术。回顾性分析EUS诊断结果与临床病理的相关性。结果 EUS检查的74例患者中,诊断神经内分泌肿瘤28例(均位于直肠);脂肪瘤15例(其中位于回盲部4例、横结肠1例、升结肠8例、乙状结肠2例);直肠间质瘤2例(固有肌层和黏膜肌层各1例);外压性改变14例(卵巢肿瘤9例,淋巴结2例,盆腔肿瘤3例);囊肿5例(横结肠4例、升结肠1例);气囊肿1例;乙状结肠子宫内膜异位3例;直肠周边恶性肿瘤侵犯4例;肠道淋巴瘤2例。所有病灶均接受深挖活检、EUS-FNA、内镜下治疗或外科手术。最终病理和EUS诊断符合率为68/74(91.9%),其中2例EUS考虑直肠类癌最后病理确诊为黏膜肌层来源的平滑肌瘤。1例考虑脂肪瘤最终确诊为肠道淋巴瘤。2例考虑直肠周边恶性肿瘤最终为炎性包块,1例考虑子宫内膜异位症最终诊断为直肠癌。结论 EUS能清晰地显示消化道各层结构,能清楚显示结直肠黏膜下病变的大小、起源及其与相邻结构的关系,并且能较精确地判断各种病变的性质,进而指导结直肠黏膜下病变的治疗。     

Early esophageal carcinoma: endoscopic ultrasonography using the sonoprobe

Background: Almost all cases of superficial esophageal carcinoma are curable by endoscopic mucosal resection (EMR), but a precise diagnosis of the depth of tumor invasion is necessary to assess the indication for EMR. Although endoscopy has a high rate of accuracy for diagnosing the depth of tumor invasion, it depends on the experience of the examiner in interpreting surface information of the lesions. Today, endoscopic ultrasonography (EUS) is one of the most powerful techniques for obtaining objective tomographic images of a tumor. The high-frequency ultrasound probe is appropriate for EUS in cases of superficial esophageal carcinoma because of its excellent near-field resolution that provides precise ultrasound images under direct control of the endoscope. Methods: We performed EUS with the Sonoprobe System in 85 cases of superficial esophageal carcinoma before treatment and evaluated the resected specimens histopathologically. We interpreted the depth of tumor invasion based on our fundamental studies of ultrasonograms taken with a 20-MHz probe. Results: The clinical usefulness of the Sonoprobe with linear and radial scanning modes is due to its capacity to differentiate between mucosal and submucosal carcinoma by means of analyses of the muscularis mucosae. Although a clear assessment of microinvasion and lymphoid hyperplasia surrounding the tumor of interest remains speculative, the diagnostic accuracy rate for 96 lesions of superficial esophageal carcinoma reached 93% in terms of differentiating between mucosal from submucosal carcinoma. Conclusion: EUS with the Sonoprobe can play an important role in the pretreatment diagnosis of superficial esophageal carcinomas.     

超声微探头在食管小平滑肌瘤黏膜切除术中的价值研究

目的 探讨超声微探头（ultrasonic miniature probe,UMP）在食管小平滑肌瘤黏膜切除术（endoscopic mucosal resection,EMR）中的价值.方法 经EUS确诊11例来源于黏膜肌层的食管小平滑肌瘤,并行EMR切除肿瘤.结果 11例食管小平滑肌瘤经EMR完整切除.所有病例术前EUS诊断和术后病理诊断完全一致.未发生出血、穿孔和感染等并发症.结论 来源于黏膜肌层的食管小平滑肌瘤的超声内镜特征为来源于第二层的内部回声均匀、边界清晰的小低回声团块.UMP可以提供食管平滑肌瘤准确的层次结构图象,并对是否适合内镜治疗进行评估.     

胃神经鞘瘤超声内镜下被误诊为胃间质瘤4例并文献复习*

目的为了提高超声内镜(EUS)对胃神经鞘瘤的检出率。方法回顾分析2008年5月-2015年6月温州医科大学附属第一、第二医院和台州市第一人民医院4例病理及免疫组化确诊为胃神经鞘瘤但经EUS误诊为胃间质瘤的临床资料及EUS的影像特征并文献复习。结果 4例胃神经鞘瘤均为女性且均为良性,胃镜下4例病灶均为单发,有3例位于胃体,1例位于胃底;EUS下病灶均起源于胃固有肌层,病灶处呈低回声团块,回声均匀,边界清楚,内部回声均未见钙化灶或囊性变;2例病灶周围可见光晕现象。文献复习发现:胃神经鞘瘤好发于女性;周围光晕现象可能为胃神经鞘瘤的特征性表现;钙化、囊性液化改变在胃神经鞘瘤中较少见,在胃间质瘤中较常见。结论位于固有肌层的胃神经鞘瘤与胃间质瘤在EUS下很难区分;对病灶位于胃体、超声图像示病灶起源于固有肌层,呈低回声、回声均匀、边界清楚的女性患者,需仔细观察病灶内部回声是否有钙化、囊性变以及病灶周围是否有光晕现象,综合考虑,除需考虑胃间质瘤外还要排除胃神经鞘瘤的可能性。     

超声内镜检查术诊断消化道黏膜下病变的回顾性分析

目的 评估超声内镜检查术（EUS）诊断消化道黏膜下病变（SML）的临床价值。方法 回顾性分析2020年1月-2021年12月该院消化内科使用EUS诊断,并经组织病理学证实为SML患者的病例资料。结果 共有142例消化道SML患者进行了EUS检查。其中,135例为实体瘤,7例为壁外压迫。实体瘤中,EUS诊断黏膜层病变14例,黏膜肌层病变20例,黏膜下层病变62例,固有肌层病变39例,其诊断准确率分别为：100.0%、100.0%、95.0%和89.7%。EUS诊断平滑肌瘤30例（21.1%）,间质瘤29例（20.4%）,神经内分泌肿瘤25例（17.6%）,异位胰腺15例（10.6%）,息肉14例（9.9%）,脂肪瘤11例（7.7%）,囊肿9例（6.3%）,壁外压迫7例（4.9%）,颗粒细胞瘤2例（1.4%）。107例行内镜治疗或手术切除后送病检,99例病理与EUS诊断相符,EUS总体诊断准确率为92.5%。结论 EUS对消化道SML诊断的准确性与病变的起源有关,起源于黏膜层与黏膜肌层的诊断准确性最高,在鉴别壁内病变与壁外压迫方面,也具有较好的诊断价值。EUS在一定程度上可以判断SML的性...     

超声内镜指导下食管间质瘤黏膜切除术

目的探讨超声内镜指导下食管间质瘤黏膜切除术的意义。方法对2005年～2007年5月76例疑为消化道黏膜下肿瘤的患者进行超声内镜检查,其中34例食管病变超声内镜显示病变来源于黏膜下层,有24例经知情同意后行超声内镜下黏膜切除术。切除的病变经过病理检查明确病变的层次和病变性质。结果通过与病理结果对照表明,超声内镜检查能准确地判断肿瘤所在层次;通过黏膜切除术切除所有的病变,无1例发生并发症。结论超声内镜指导食管间质瘤黏膜切除术既准确又安全。     

Chronic erosions of the stomach--a clinical, endoscopic and histological evaluation

A clinical, endoscopic and histological study was performed in 300 patients with chronic gastric erosions. The male-female ratio was 4:1. The antrum was the preferential site of erosions. Chronic erosions were classified into two categories: "active" (with a dark clot or whitish coat of fibrin) and "inactive" (covered by a normal pink mucosa). All the lesions showed foveolar hyperplasia, partial obliteration of the lamina propria by fibrous and smooth muscle bundles, a greatly thickened muscularis mucosae and an increased number of submucosal thick-walled vessels. In the "active" stage the central umbilicated area was covered by a collection of granulocytes, while in some of the "inactive" erosions the central depression showed the presence of a channel-like structure penetrating into the lamina propria. In two cases the lesion mimicked a gastric adenomyoma. Gastric acid secretion was significantly increased in the tested patients as compared with normal. The similarity of the histological findings with those in ischemic conditions of the gastro-intestinal tract suggests that both hypersecretion and localized ischemia may play a role in the pathogenesis of chronic erosions.     

Use of endoscopic ultrasound-guided injection in endoscopic resection of solid submucosal tumors.

AIMS: Submucosal tumor (SMT) is a common disease. We used endoscopic ultrasound (EUS)-guided puncture to inject saline before resection of SMTs, and evaluated the usefulness of this method. PATIENTS AND METHODS: We selected 16 symptomatic patients with solid SMTs in the upper gastrointestinal tract, confirmed by endoscopy and EUS. We first used EUS-guided puncture to inject saline to separate the submucosal lesions from the deeper normal tissues. Lesions in the muscularis mucosa and submucosa were then removed directly by snare cauterization. Lesions in the muscularis propria were treated by means of a two-step approach: first, we incised the superficial tissue of the tumors using an electrosurgical needle, and second, we enucleated SMTs as much as possible by tightening the snare around them and creating pseudo-stalks. After snare excision of SMTs, the cleavages of the superficial tissues were closed using metal clips. RESULTS: Among the 16 patients, one lesion was in the muscularis mucosa, six were in the submucosa, and nine were in muscularis propria. All the lesions were resected thoroughly. No perforation occurred nor had any recurrences been observed at follow-up of 12 - 17 months. CONCLUSIONS: EUS-guided puncture to inject saline before resection is a safe and accurate procedure in the treatment of submucosal tumors.     

多层螺旋CT及超声内镜对胃肠道间叶源性肿瘤的诊断价值

目的：探讨胃肠道间叶源性肿瘤（GIMT）的16层螺旋CT（MSCT）和超声内镜（EUS）表现及其诊断价值。方法：回顾性分析手术病理证实的GIMT37例，术前37例均行CT平扫，35例行双期增强扫描，17例行超声内镜检查。结果：胃肠道间质瘤（GIST）31例（食道1例，胃19例，小肠6例，直肠1例，胃肠外4例），平滑肌瘤4例（食道3例，胃1例），胃神经源性肿瘤2例。①CT表现：黏膜下富血供肿块，倾向腔外生长，可有囊变、坏死、出血、钙化，无淋巴结转移。增强后良性GIMT及交界性GIST均匀强化，边界清楚，良性GIMT肿块直径1．0-3．0cm，平均2．16cm。胃交界性GIST直径1．2～3．5cm，平均2．24cm。恶性GIMT强化不均匀，肿瘤最大径3．5-16．0cm，平均6．9cm，可有邻近脏器侵犯。定位准确率30／37（81．08％），定性准确率20／37（54．05％）。②EUS表现：内镜表现为黏膜下隆起性病变，EUS显示肿瘤起源于黏膜肌层或固有肌层的低回声改变，良性GIMT内部回声均匀，边界清楚，肿瘤最大径0．5-3．5cm，平均1．75cm。恶性GIMT回声多不均匀，可伴有液性暗区，形态不规则，可有浸润性改变，肿瘤最大径6．0-10cm，平均9．2cm。定位准确率16／17（94．12％），定性准确率15／17（88．23％）。结论：MSCT和EUS能准确显示肿瘤的部位、形态、大小，内部结构及浸润情况，有利于良恶性的判断，对临床治疗及预后有着重要的指导价值。     

超声内镜在食管微小平滑肌瘤诊断和治疗中的应用价值

目的：探讨超声内镜在食管微小平滑肌瘤诊断和治疗中的应用价值。方法：对24例临床诊断微小食管平滑肌瘤患者，行超声胃镜检查后分别予高频电切除或外科手术切除，切除组织送组织病理检查．最后对比分析相关资料。结果：24例行超声胃镜检查，显示超声声像以低回声、不均匀回声多见，境界较清楚。12例病变位于黏膜肌层，9例病变位于固有肌层浅层，共21例予高频电切除治疗；3例病变位于固有肌层深层，予外科手术治疗。24例病理检查示平滑肌瘤23例(瘤位于黏膜肌层12例，固有肌层11例)。超声内镜检查诊断准确率95.8％(23/24)。结论：超声胃镜不仅能对食管微小平滑肌瘤作出准确诊断．而且由于其对肿瘤的起源、范围等探查准确，可为后续治疗的选择提供重要的借鉴。     

Diagnosis of cystic neoplasms with endoscopic ultrasound

From the data that are currently available, it appears that EUS can help to reliably distinguish between the majority of benign and neoplastic cystic lesions. In equivocal cases, or cases where a high suspicion for malignancy exists, the use of EUS-guided FNA for obtaining cytology and cystic fluid for analysis of various tumor markers, gives the best diagnostic yield. Occasionally, despite a complete evaluation of a cystic mass, the cyst type may not be determined. The decision regarding further management of these lesions should be based on a combination of factors including symptoms, cyst size, EUS morphology and the patient's overall medical condition. In the case of symptomatic, large, or suspicious lesions where the patient is a good surgical candidate, surgical resection should be performed. However, it becomes more difficult in the case of asymptomatic, small cystic lesions where the patient is not an optimal surgical candidate. In the latter scenario, applying EUS criteria for follow-up of small pancreatic cystic lesions as reported by Ikeda et al can help in the decision-making process. In this study, Ikeda et al reported on 31 patients with pancreatic cystic lesions of unknown etiology that were followed-up with semi-annual EUS exams over a 3-year period. In 87.1% of these lesions, the size was less than 2 cm. Their criteria included 1) a clear thin wall, 2) smooth contour, 3) round or oval shape, 4) no septum or nodules, 5) asymptomatic clinical presentation, and 6) no findings of chronic pancreatitis. The cystic lesions remained stable in 30/31 patients, and only one lesion increased in size. This lesion was resected and was found to be a retention cyst. We are optimistic that the role of EUS in the management of cystic neoplasms will continue to evolve and expand as future studies evaluate the clinical utility of imaging modalities for the optimal practice algorithm for managing these neoplasms.     

超声内镜辅助下套扎治疗上消化道黏膜下肿瘤的临床研究

目的探讨超声内镜辅助下橡皮圈套扎治疗上消化道黏膜下肿瘤(submucosal tumor, SMT)的适应证、疗效及并发症等。方法选取近年来经超声内镜确诊患有上消化道黏膜下肿瘤的患者69例共71枚病变,所有患者均于超声内镜评估后行橡皮圈套扎治疗,术后常规给予质子泵抑制剂治疗,并于2~4周后复查胃镜。结果肿瘤直径0.5~1.5 cm,病变位于食管32枚（45.1%）,胃23枚（32.4%）,十二指肠16枚（22.5%）;位于黏膜深层28枚（39.4%）,黏膜下层20枚（28.2%）,固有肌层23枚（32.4%）;病变形态广基56枚（78.9%）,亚蒂15枚（21.1%）;一次性套扎成功63枚（88.7%）,失败8枚（11.3%）,对治疗成功与失败组病变进行进一步分析显示,肿瘤大小、起源层次及质地是决定此方法是否成功的关键因素。结论对上消化道黏膜下肿瘤进行超声内镜检查,能够获取病变起源、大小以及弹性等信息,是临床开展橡皮圈套扎治疗的重要术前诊断方法。     

A useful approach to the differential diagnosis of small polypoid lesions of the gallbladder,utilizing an endoscopic ultrasound scoring system

BACKGROUND AND STUDY AIMS: The purpose of this study was to assess the accuracy of endoscopic ultrasonography (EUS) in making a differential diagnosis of small (< or = 20 mm in diameter) polypoid lesions of the gallbladder, and to construct an EUS scoring system. PATIENTS AND METHODS: The EUS findings were retrospectively analyzed in 70 surgical cases of small polypoid lesions classified into two groups: neoplastic (adenocarcinoma in 11, and adenoma in 7), and non-neoplastic (cholesterol polyp in 44, inflammatory polyp in 7 and fibrous polyp in 1). The EUS variables were the maximum diameter and height/width ratio of the largest polyps, echo level, internal echo pattern, surface patterns, number and shape of polyps, presence of hyperechoic spotting, complication of gallbladder stones. The EUS data were used for the construction of an EUS scoring system to ascertain the risk of neoplasia. RESULTS: Three EUS variables, i. e. tumor maximum size, internal echo pattern, and hyperechoic spotting were statistically significant according to multivariate analysis using stepwise logistic regression models (P < 0.01, P < 0.05, and P < 0.01, respectively). The total EUS score based on the coefficient of multivariate analysis was as follows: (maximum diameter in mm) + (internal echo pattern score; where heterogeneous = 4, homogeneous = 0) + (hyperechoic spot[s] score; where presence = - 5, absence = 0). According to our EUS scoring system, the sensitivity, specificity, and accuracy for the risk of neoplastic polyps with scores of 12 or higher were 77.8 %, 82.7 % and 82.9 %, respectively. CONCLUSIONS: The EUS scoring system will be a useful means of differentiating between neoplastic and non-neoplastic polyps of the gallbladder.     

Sonographic appearance of primary small bowel carcinoid tumor

Background To assess the value of sonography in the diagnostic work-up of small bowel carcinoid tumors and characterize their sonographic appearance.Methods We retrospectively reviewed the sonographic findings (size, shape, echogenicity, contour, location, wall thickening, serosal transgression, vascularity) of all cases of carcinoid tumors investigated between January 1988 and January 1993. Six tumors, in five patients with histologic proof, were analyzed and, when possible, correlation with pathological or surgical results was made.Results In four out of five cases, the tumor was not suspected clinically prior to sonography; in one case, a small synchronous lesion was only found at surgery. Its sonographic appearance was a hypoechoic, homogenous, predominantly intraluminal mass with smooth intraluminal contour and attached to the wall by a broad base with interruption of the submucosa and thickening of the muscularis propria in all cases. There were signs of serosal transgression in four cases, puckering and retraction in two cases, hypervascularity in two cases, and mesenteric involvement in three cases. All lesions were located in the ileum and the mean diameter was 22 × 17 mm.Conclusion Ultrasonography was useful in the detection of primary carcinoid tumors of small bowel. Their sonographic characteristics were described and some of them were highly suggestive of the diagnosis.     

Prospective comparison of catheter-based endoscopic sonography versus standard endoscopic sonography: evaluation of gastrointestinal-wall abnormalities and staging of gastrointestinal malignancies

PURPOSE: Endoscopic sonography (EUS) is an important imaging modality for evaluating benign and malignant luminal gastrointestinal-tract abnormalities. The objectives of this study were to evaluate the feasibility of catheter-based EUS (C-EUS) during standard upper and lower endoscopy in patients with malignancies and other abnormalities of the gastrointestinal-tract lumen, to assess the image quality obtained with the 12.5-MHz catheter-based ultrasound transducer, and to prospectively compare the interpretations of C-EUS images with those of the standard EUS (S-EUS) images. METHODS: One hundred thirty-seven consecutive patients referred for EUS were evaluated with C-EUS followed by S-EUS. The patients were assigned to 1 of 2 groups: group A, patients with intramural masses or intestinal wall thickening, with biopsies negative for malignancy; and group B, patients with esophageal, gastric, duodenal, or rectal cancer referred for staging. The results of C-EUS and S-EUS were compared for each group. RESULTS: C-EUS was completed in 134 patients: 81 patients with 83 lesions in group A and 53 patients in group B. For group A, C-EUS image interpretation concurred with that of S-EUS in 74 (89%) of 83 lesions. For group B, C-EUS concurred with S-EUS for tumor depth (T) and nodal (N) classifications in 19 cases (36%) and 26 cases (49%), respectively. The depth of invasion was underestimated by C-EUS in all 34 cases in which the T classifications by C-EUS and S-EUS were discordant. In 1 of 6 patients with stenotic cancer that was nontraversable by S-EUS, C-EUS identified lymphadenopathy (incorrectly classified as N0 by S-EUS). CONCLUSIONS: C-EUS was easily performed, and the C-EUS images were comparable to the S-EUS images in assessing mucosal and intramural lesions. The limited depth of penetration of the catheter-based transducer resulted in understaging the extent of tumor invasion and underestimating the nodal spread.     

直肠癌高分辨MR表现与T2、T3分期的关系

目的 探讨直肠癌高分辨MRI的征象与其病理T2、T3分期的关系。方法 回顾性分析52例直肠癌患者的术前MRI征象（包括低信号环中断征、索条影、毛刺征及肠周结节征）,结合病理结果比较各征象与直肠癌T2、T3分期的关系。结果 直肠癌T2、T3分期低信号环中断征、毛刺征及肠周结节征差异有统计学意义（P均<0.05）,索条影差异无统计学意义（P=0.154）;低信号环中断征和肠周结节征与直肠癌病理T分期呈低度相关（r=0.333、0.313,P=0019、0.022）,毛刺征与直肠癌病理T分期呈中度相关（r=0.523,P<0.001）;多因素回归分析显示毛刺征及肠周结节征可独立预测T3期直肠癌。结论 高分辨MRI对直肠癌术前T分期具有一定价值,其毛刺征及肠周结节征可以独立预测直肠癌T2、T3分期。     

A new technique in endoscopic ultrasonography of the upper gastrointestinal tract

Endoscopic ultrasonography (EUS) of the upper GI tract was unsuccessful in 42 out of 274 patients (15%) due to inaccurate guidance of the probe to small, shallow lesions, or to difficulty in clearly demonstrating the surrounding layer structure and boundary of the lesion. We applied the saline injection technique in these 42 patients. Saline was injected into the submucosal layer of the esophagogastric wall. The ultrasonographic image of adjacent saline accurately guided the probe to the lesion. Injected saline enabled the mucosal layer to be distinguished from the muscularis propria surrounding the lesion and provided clear ultrasonographic imaging of the boundary between the lesion and the surrounding layer structure. This new method was found to be effective in 38 out of 42 patients in whom EUS was unsuccessful. A study comparing the depth of tumor invasion diagnosed by the saline injection technique with histological findings obtained in 12 cases showed good correlation. These results indicate that the saline injection technique would seem to be very useful as an adjuvant to conventional EUS.     

内镜下橡皮圈套扎术治疗上消化道黏膜下肿瘤疗效观察——附46例报告

目的：探讨内镜下橡皮圈套扎术治疗上消化道黏膜下肿瘤的适应证、近期疗效及并发症。方法：选取经普通胃镜及超声内镜检查,诊断为食管、胃及十二指肠黏膜下肿瘤的病例,均拟诊为上消化道间质瘤或平滑肌瘤,病灶≤1．2cm,呈内向型生长。所有病变均采用橡皮圈套扎术治疗,术后常规口服PPI并于术后2周复查胃镜。结果：共46例患者,肿瘤均为单发,直径0．5～1．2cm,平均（0．9±0．2）cm。病变位于食管19例（41％）、胃20例（44％）、十二指肠7例（15％）;位于固有肌层24例（52％）、黏膜肌层22例（48％）。45例完成套扎,1例因不能耐受手术中途放弃套扎。术后2周复查胃镜显示43例病变完全脱落,1例部分脱落,病变变小,1例胃底穿孔未复查胃镜。1例术后5d内出现一过性少量黑便,1例术后第1天出现胃底穿孔。治愈率为94％（43／46）,并发症发生率为4％（2／46）。结论：内镜橡皮圈套扎术治疗符合适应证的上消化道黏膜下肿瘤,安全有效,操作简便易行。