胃粘膜相关淋巴组织淋巴瘤的内镜下表现

目的 胃粘膜相关淋巴组织淋巴瘤（ＭＡＬＴ淋巴瘤）的内镜特征。方法 对１９例胃ＭＡＬＴ淋巴瘤患者的临床资料进行回顾分析。结果 胃ＭＡＬＴ淋巴瘤的内镜下表现呈多样性改变。病变主胃体最多（７８．９％）,主要病变形态包括溃疡（６３．２％）、肿块（１５．８％）、浸润病变（１５．８％）及糜烂（５．３％）。大多数２（７３．７％）有较典型的恶性征象,但少数可无典型恶性征象,甚至仅表现为一般的炎症及糜烂。本组病例内     

早期胃癌合并胃黏膜相关淋巴组织淋巴瘤伴原位滤泡肿瘤一例

本文报道1例早期胃癌合并胃黏膜相关淋巴组织淋巴瘤伴原位滤泡肿瘤的患者。通过术前精查,内镜黏膜下剥离术的选择,术后根据病理制定治疗方案及严密随访等规范化治疗,为早癌合并多种淋巴瘤的诊治提供新的借鉴。     

胃粘膜相关淋巴组织淋巴瘤的内镜和病理特点

目的 探讨胃粘膜相关淋巴组织（MALT）淋巴瘤的内镜和病理特点,以提高其在内镜下的确诊率。方法 回顾性结合部分前瞻性分析28例患者。结果 胃MALT淋巴瘤多见于40－60岁患者,确诊病程的中位数为8．5月。临床症状无特异性,抗酸剂治疗无效,25％可引起上消化道出血。Hp感染率为78．6％,10．7％患者的CA125可升高,17．9％患者的ESR升高。高度恶性者可发生浸润或转移。肿瘤多位于胃体下段和／或胃窦部,占96．4％,75％表现为单个或多人浅表性溃疡,质地偏硬,但大部分患者的粘膜尚可稍提起,少见的病变有稍隆起性、糜烂和坏死性病变。胃镜下形态诊断的误诊率为89．3％。胃镜下常规活检组织病理检查,恶性疾病漏诊率为57．1％,而胃MALT淋巴国漏诊率为82．1％,术后病理检查确诊率达100％。深而大的活检和免疫组织化学检查有助于确诊。B细胞淋巴瘤占88．9％,T细胞淋巴瘤占11．1％。结论 胃MALT淋巴瘤是一类独特的原发性胃淋巴瘤,具有一定的病理和内镜特点。     

胃黏膜相关淋巴组织淋巴瘤临床与内镜诊断分析

目的:探讨胃黏膜相关淋巴组织(MALT)淋巴瘤的临床和内镜下表现,提高对胃MALT淋巴瘤早期诊断率.方法:总结我院1992年2月～2003年6月经内镜检查、组织病理、免疫组化确诊为胃MALT淋巴瘤的18例临床资料并进行分析.结果:18例患者从发病到就诊时间平均5.6个月,男性比女性为5比1.首发症状为上腹部疼痛,依次有腹部饱胀、反酸嗳气、恶心呕吐、食欲减退、呕血与黑便、贫血消瘦等临床表现.内镜下形态表现分弥散浸润型12例、多发溃疡型4例、隆起糜烂型2例.形态表现为多部位、多种形态和病变范围广为特征.内镜下常误诊为胃癌、溃疡等,需经病理学、免疫组化检查确诊.本组17例(94.5%)Hp阳性,2例经根除Hp治疗获治愈.结论:胃MALT淋巴瘤起病较隐匿、病程较长.症状、体征不具特异性.内镜下形态呈多样性,病变累及范围广、部位多.多点深取活检及病理学、免疫组化检查是提高胃MALT淋巴瘤确诊率和早期诊断率的重要方法.Hp感染与胃MALT淋巴瘤密切相关.     

胃粘膜相关淋巴组织淋巴瘤临床与内镜表现特征

目的 探讨胃粘膜相关淋巴组织（MALT）淋巴瘤临床和内镜表现特征及其内在联系。方法 总结1985年－1999年我院经手术及病理证实的32例胃MALT淋巴瘤患者临床和内镜资料。结果 32例患者平均就诊时间为15.6月,平均年龄51.3岁,30－39岁及60－69岁为发病高峰,男女比例1.9:1。患者症状不具有特异性,腹痛是其最常见表现。病变累及胃窦12例,胃体8例,多部位者12例。内镜下表现为弥漫型10例,溃疡型16例,结节型6例。各型症状、体 征无显著差异。弥漫型病灶在累及浆膜层前已发生淋巴结转移。内镜确诊率62.5%。32例均为B细胞淋巴瘤,其中27例伴幽门螺杆菌（Hp）感染(84.4%)。结论 胃MALT淋巴瘤发病年龄呈双峰现象,男性居多,起病隐袭,症状、体征不具有特异性。内镜下病变范围广、病灶多发是其特点,各型临床表现无显著差异,但弥漫型容易发生周围淋巴结转移。内镜下多块取检、深取检以及及时做免疫组化检查可提高内镜诊断准确率。Hp感染可能与胃MALT淋巴瘤的发生有关。     

胃黏膜相关淋巴组织淋巴瘤的临床、病理及内镜下表现探讨

黏膜相关淋巴组织（MALT）淋巴瘤中胃MALT淋巴瘤最为常见,在胃恶性肿瘤中占2%～8%,并有逐年升高的趋势.它有其特殊的组织病理、免疫组化特征,但临床症状、内镜下表现缺乏特异性,早期诊断较困难[1].我们分析总结了我院40例胃MALT型淋巴瘤的病理、临床资料,旨在提高对胃MALT淋巴瘤的认识。     

胃黏膜相关淋巴样组织淋巴瘤早期诊治的探讨

目的　探讨胃黏膜相关淋巴样组织 (MALT)淋巴瘤早期诊断的方法及根除幽门螺杆菌(Hp)治疗的临床意义。方法　观察胃淋巴增殖症 (GLH)患者根除Hp前后组织学、Ki 6 7标记率及免疫球蛋白重链 (IgH)重排克隆性变化的情况 ,组织学参照Isaacson组织学评分标准 ,免疫组化检测L2 6、UCHL 1、抗κ、抗λ及抗Ki 6 7,半巢式PCR检测IgH重排。结果　 31例GLH以慢性胃炎及胃溃疡为主 ,男女比例 1.8∶1,平均病程 6 .8年。 2 9例感染Hp。组织学评分以Ⅱ、Ⅲ级者多见。仅 1例表达λ轻链限制性 ,10例 (32 .3% )检测到单克隆IgH重排。随着组织学分级递增 ,Ki 6 7标记率及单克隆重排递增 (P <0 .0 5 )。对 2 8例抗Hp治疗 ,2 4例获得根除 ,平均随访 4 .6个月。治疗后 18例组织学及内镜完全缓解 ,10例部分或无缓解。 4例Ⅳ级以下者Ki 6 7标记率全部下降且逆转为多克隆 ,而 4例Ⅳ级无变化。结论　组织学、Ki 6 7及IgH重排结合 ,有助于筛选早期干预病例及早期诊断胃MALT淋巴瘤。PCR检测IgH重排对Ⅲ或Ⅳ级的病例意义更大。     

胃黏膜相关淋巴组织淋巴瘤临床与胃镜表现分析

目的探讨胃黏膜相关淋巴组织(mucosa-associated lymphoid tissue,MALT)淋巴瘤临床和内镜下表现特征,提高其在胃镜下的早期诊断率。方法对15例胃MALT淋巴瘤患者临床和内镜下表现特征进行回顾性分析。结果胃MALT淋巴瘤多见于40~60岁患者,男女发病率相近。临床症状无特异性,H.pylori感染率为73.33%。胃MALT淋巴瘤多位于胃窦部,66.67%表现为单个或多个溃疡,质地偏硬,蠕动性及胃腔形态无明显特异性。结论胃MALT淋巴瘤作为一类特殊的原发性胃淋巴瘤,内镜下多块、深而大的活检有助于提高确诊率。     

胃黏膜相关淋巴组织淋巴瘤临床病理分析

回顾性分析我院21例胃黏膜相关淋巴组织(MALT)淋巴瘤临床资料.本病临床表现以腹部疼痛及上消化道出血为主,胃镜检查均见病灶处大小不等结节状隆起、溃疡,病灶质地僵硬,接触易出血;病变多位于胃窦和(或)胃体部.胃组织病理活检均显示胃黏膜组织中间质内有大量小淋巴细胞弥漫性浸润,浸润淋巴滤泡的边缘带,取代和破坏部分胃黏膜腺体和上皮成分.本组Hp阳性18例(85.7%),2例经根除治疗获治愈.本组行手术 化疗12例,单纯手术3例,单纯化疗4例,单纯抗Hp治疗2例.手术切除胃原发病灶加抗Hp及联合化疗治疗效果较佳.     

Clinicopathological features of gastric mucosa-associated lymphoid tissue lymphoma: A comparison with diffuse large B-cell lymphoma without a mucosa-associated lymphoid tissue lymphoma component

BACKGROUND AND AIMS: The aim of this study was to clinicopathologically distinguish the pathogenesis of gastric mucosa-associated lymphoid tissue (MALT) lymphoma and diffuse large B-cell lymphoma without a MALT lymphoma component (DLL). METHODS: We investigated clinicopathological features of these gastric lymphomas including age, sex ratio, tumor location and depth, macroscopic appearance, and infection with Helicobacter pylori of these gastric lymphomas and hepatitis viruses in 24 patients with gastric low-grade MALT lymphoma, 10 patients with high-grade MALT lymphoma, and 19 patients with DLL. The frequency of H. pylori infection in lymphoma patients was compared with that in age- and sex-matched control subjects. RESULTS: There was a predominance of females with MALT lymphoma (male to female ratio, 8/16 for low-grade MALT lymphomas and 1/9 for high-grade MALT lymphomas), and there was a predominance of males with DLL (male to female ratio, 13/6); the ratios differed significantly (P < 0.05). Ninety-two percent of low-grade MALT lymphomas and 80% of high-grade MALT lymphomas were confined to the mucosal and submucosal layers, but lymphoma cells invaded the muscular layer or more deeply in 74% of DLL. Helicobacter pylori infection occurred significantly more often in patients with low-grade MALT lymphoma than in age- and sex-matched controls (96 vs 67%, P < 0.01). Conversely, the frequency of H. pylori infection in DLL patients did not differ from that in controls. CONCLUSIONS: These data suggest that H. pylori infection may be associated with the development of gastric MALT lymphoma, but not DLL, and that MALT lymphoma and DLL may have a different pathogenesis.     

78例胃粘膜相关淋巴组织淋巴瘤临床、内镜及病理特征分析

目的：探讨胃粘膜相关淋巴组织淋巴细胞的临床、内镜及病理特征，以提高早期诊断水平。方法：分析手术切除并经病理证实的78例胃粘膜相关淋巴瘤患者的临床、内镜和病理资料。结果：患者男女比例为1．05：1，平均年龄48．2岁，平均病程25．6个月，症状非特异性，以EⅠ2和EⅡ1期病变为主，内镜检查70例结果显示，病变多见于胃窦体，表现为溃疡性，隆起性及浸润性损害，以多灶性，多形性及弥漫性病变为特征。56例胃活检中，组织学结合免疫组化可对41例（73．2％）术前确诊。78例均为B细胞淋巴瘤，高恶性居多，67例（85．9％）幽门螺杆菌阳性。结论：胃粘膜相关淋巴组织淋巴瘤患者内镜改变具特征性。内镜下病变形态识别，多取，深取活检以及同期作免疫组化检查可提高早期诊断准确率。     

Intestinal dissemination of gastric mucosa-associated lymphoid tissue lymphoma

Despite increasing identification of concurrent gastric and intestinal lymphomas of mucosa-associated lymphoid tissue (MALT), the clonal relationship between the two tumors and their sequential development are poorly understood. It is also unknown whether the development of these concurrent tumors is closely associated with direct antigen stimulation, which is thought to play an important role in the clonal expansion of low-grade MALT lymphomas. To investigate these, we have studied six cases of concurrent gastric and intestinal MALT lymphomas by polymerase chain reaction (PCR) amplification, cloning, and sequencing of the rearranged Ig gene, a strategy that has been widely used for analysis of clonality and antigen-driven properties of B-cell malignancies. In each case, an identical or nearly identical complementarity determining region (CDR) 3 sequence was observed between the dominant clones of concurrent gastric and intestinal MALT lymphomas. In four of six cases examined, sufficient Ig variable region sequence information was obtained to permit analysis of somatic mutations. The mutation patterns in one case suggest that the intestinal lesion is secondary to the gastric tumor, and the mutation patterns in two cases indicate that the gastric and intestinal lesions are derived from different tumour subclones, which emerge after expansion of a common early tumor clone. Furthermore, three of four cases showed ongoing Ig mutations among different PCR clones at each site. These results show that concurrent gastric and intestinal MALT lymphomas are derived from the same clone and suggest that the intestinal lesions result from dissemination of gastric tumours. Antigen stimulation may play a role in tumor evolution, particularly at an early stage.     

胃黏膜相关淋巴组织(MALT)淋巴瘤研究进展

胃黏膜相关淋巴组织(MALT)淋巴瘤在MALT中占有重要地位,研究其发病机制、病理、诊治等方面对防治胃MALT淋巴瘤有重要意义。     

肺黏膜相关淋巴组织淋巴瘤临床特征分析

目的：提高肺黏膜相关淋巴组织淋巴瘤诊治水平。方法回顾性分析江西省人民医院及南昌大学第二附属医院自2005年1月至2015年1月确诊的8例肺黏膜相关淋巴组织淋巴瘤的临床表现、影像学特点、诊断手段、误诊情况、治疗及预后。结果8例肺黏膜相关淋巴组织淋巴瘤中男6例,女2例,年龄38~75岁,中位年龄65岁。主要症状：咳嗽(5例)、咳痰(4例)、发热(2例)、胸闷(4例)、乏力(3例)、消瘦(3例),无症状2例。胸部 CT 表现：双肺分布5例,单肺分布3例,实变影5例,肿块及结节影4例,斑片状浸润影3例,支气管充气征5例,钙化1例,空洞2例。确诊方法：经气管镜活检1例,CT 引导下经皮肺穿刺5例,外科手术2例。误诊分析：5例误诊为细菌性肺炎,1例误诊为肺真菌病,1例误诊为肺癌,1例误诊为肺转移癌。治疗及预后：2例外科手术患者术后未行放化疗,4例转入血液内科行化疗(CHOP 方案),2例放弃治疗。8例患者随访时间2~105个月,2例死亡,6例存活。结论肺黏膜相关淋巴组织淋巴瘤临床表现不典型,容易误诊,诊断需要组织病理活检。     

早期胃黏膜相关淋巴组织淋巴瘤患者52例的临床分析

目的 探讨早期胃黏膜相关淋巴组织（MALT）淋巴瘤患者的临床特点及抗幽门螺旋杆菌（Hp）治疗和抗肿瘤治疗的疗效。方法 收集2003年4月至2013年5月在天津医科大学附属肿瘤医院确诊并治疗的早期胃MALT淋巴瘤患者52例的病例资料。对Hp感染的患者进行抗Hp治疗。对抗Hp治疗失败的患者进行抗肿瘤治疗。结果 52例早期胃MALT淋巴瘤患者中,Hp感染率为88.4%。抗Hp治疗的有效率为91.3%。18例患者进行抗肿瘤治疗,有效率为66.7%。52例患者5年的总生存率为92.3%,5年无疾病进展生存率为83.1%。结论 对于早期胃MALT淋巴瘤患者,抗Hp治疗是合理和有效的治疗方法。抗Hp治疗失败的患者应进行抗肿瘤治疗,从而使患者得到长久的获益。     

眼结膜黏膜相关淋巴组织边缘区淋巴瘤临床病理分析

目的探讨眼结膜黏膜相关淋巴组织边缘区淋巴瘤临床病理特征、诊断、治疗及预后。方法回顾性分析了11例原发性眼结膜黏膜相关淋巴组织边缘区淋巴瘤患者的临床、病理资料并进行了随访。结果11例患者中男4例,女7例,发病年龄23～74岁,平均年龄为45岁。累及单侧结膜10例,双侧结膜1例,其他部位及系统未见淋巴瘤。病理形态:结膜固有层内弥漫性小-中等大小的淋巴样细胞及单核样细胞浸润,核形轻度不规则。免疫表型:弥漫性浸润细胞CD20(+)、CD3(-)、CD5(-)、CD10(-)、CD23(-)、Cyclin D1(-),5例异常表达CD43,ki67增殖指数为1%～10%。5例行Ig基因克隆性分析,均呈单克隆。6例单纯肿物完整切除,2例肿物完整切除加局部放疗,1例肿物部分切除加局部放疗,1例单纯活检,1例活检后局部注射化疗,肿物未消退,随后行肿物完整切除加局部放疗。随访时间3～122个月,截止随访日期,除2例失访,其他患者生存。其中行肿物单纯活检的患者长期带瘤生存,余8例未见复发。结论眼结膜黏膜相关淋巴组织边缘区淋巴瘤好发于中年女性,结膜见粉红色肿物为临床特征,镜下为小-中等大小的淋巴样细胞及单核样细胞弥漫性浸润,肿瘤细胞表达B淋巴细胞表型,增殖指数低,部分病例异常表达CD43,Ig基因克隆性分析有助于诊断,单纯肿物完整切除或术后辅以局部放疗均有较好的疗效,预后良好。     

Helicobacter pylori infection in gastric mucosa-associated lymphoid tissue lymphoma

Gastrointestinal lymphoma is the most common type of extranodal lymphoma,and most commonly affects the stomach.Marginal zone B-cell lymphoma of the mucosa-associated lymphoid tissue(MALT)and diffuse large B-cell lymphoma are the most common histologic types of gastric lymphoma.Despite its increasing incidence,diagnosis of gastric lymphoma is difficult at an earlier stage due to its nonspecific symptoms and endoscopic findings,and,thus,a high index of suspicion,and multiple,deep,repeated biopsies at abnormally and normally appearing sites in the stomach are needed.In addition,testing for Helicobacter pylori(H.pylori)infection and endoscopic ultrasonography to determine the depth of tumor invasion and involvement of regional lymph nodes is essential for predicting response to H.pylori eradication and for assessment of disease progression.In addition,H.pylori infection and MALT lymphoma development are associated,and complete regression of low-grade MALT lymphomas after H.pylori eradication has been demonstrated.Radiotherapy and/or chemotherapy can be used in cases that show poor response to H.pylori eradication,negativity for H.pylori infection,or high-grade lymphoma.