肺黏膜相关淋巴组织淋巴瘤的CT诊断

目的 研究肺黏膜相关淋巴组织(MALT)淋巴瘤的CT表现,提高对该病的认识及鉴别诊断能力.方法 回顾性分析经病理证实的12例MALT淋巴瘤的CT表现,影像观察指标为病灶的数量、分布、形态、密度及伴随征象.结果 12例MALT淋巴瘤中共检出肺实变、肺肿块、肺结节、磨玻璃样病灶32个,病灶单发2例,多发10例;多发病例中单肺多发2例,双肺多发8例.肺实变10例共21个病灶,其内均可见支气管充气征,1例2个病灶内见支气管扩张;肺肿块或结节影3例共5个病灶,3个病灶内可见支气管充气征;磨玻璃样改变2例共6个病灶;1例伴纵隔及肺门淋巴结肿大.结论 MALT淋巴瘤CT上常表现为双肺多发、含有支气管充气征的肺实变、肿块、结节样或磨玻璃样改变;上述影像表现及相对缓慢的病变过程提示MALT淋巴瘤的诊断.     

肺黏膜相关淋巴组织淋巴瘤的CT表现

目的探讨肺黏膜相关淋巴组织(MALT)淋巴瘤的CT表现,以提高对本病的认识。方法回顾性分析21例经手术、穿刺活检病理证实的肺黏膜相关淋巴组织淋巴瘤的CT影像表现。结果 21例MALT中,双侧肺分布14例(66.7%),单侧肺病灶7例(33.3%)。病灶形态呈斑片及实变影16例(76.2%),结节形或肿块样4例(19%),弥漫性间质性改变1例(4.8%)。结节状病灶、实变病灶及斑片状病灶内有较粗大的支气管充气征12例,粗大蜂窝状改变2例,MALT病灶边缘较清晰,不规则15例,伴毛刺样改变的5例,胸膜凹陷的3例,伴胸腔积液的4例。结论肺MALT淋巴瘤CT表现多样,可为单发结节影、斑片状影及实变影,亦可弥漫性间质性改变,病灶内常伴有粗大的支气管充气征,病灶周边不规则,伴毛刺及胸膜凹陷改变,上述影像表现要考虑MALT的诊断。     

肺黏膜相关淋巴组织型淋巴瘤的影像表现

目的 探讨肺黏膜相关淋巴组织型(MALT)淋巴瘤CT或18F-脱氧葡萄糖(FDG)PETCT表现及其诊断价值.方法 回顾性分析14例经手术及病理证实的肺MALT淋巴瘤的CT或18F-FDG PET-CT表现特点.结果 单肺病灶7例,双肺病灶7例,其中单发实变影3例,单发肿块影3例,单发结节影1例,多发结节影1例,肿块影合并结节影、斑片状影1例,实变影合并斑片状影4例,弥漫性间质性病变1例.9例有支气管充气征,5例有CT血管造影征.2例FDG代谢不均匀增高,最大标准摄取值超过2.5.结论 肺MALT淋巴瘤的影像特征性表现主要为单发或多发结节、肿块或实变影,内有支气管充气征,18F-FDG高代谢,确诊主要依靠病理组织学和免疫组织化学.

Abstract：

Objective To assess the value of CT or PET-CT with fluorine-18-labeled fluorodeoxyglucose (FDG) for the diagnosis of pulmonary mucosa-associated lymphoid tissue (MALT) type lymphoma. Methods The CT or FDG PET-CT findings in 14 patients with pathologically proved pulmonary MALT lymphoma were retrospectively analyzed. Results Lung lesions were unilateral in 7 patients and bilateral in 7 patients. Lesions presented as a single mass in 3 patients, as a single consolidation in 3 patients, as a nodule in 1 patient, as multiple nodules in 1 patient, as multiple patchy consolidations in 4 patients, as a mass with multiple nodules and patchy consolidations in 1 patients, as diffuse interstitial change in 1 patients. Air bronchogram was found in 9 patients and CT angiogram sign in 5 patients. On PET-CT, lesions showed heterogeneous FDG uptake in 2 patients, maximum standard uptake value was higher than 2. 5. Conclusion Imaging characteristics of pulmonary MALT lymphoma are single or multiple nodules or consolidations with air bronchogram on CT, and heterogeneous high FDG uptake on PET-CT.     

胃肠道黏膜相关淋巴组织淋巴瘤六例报告及文献复习

目的 报告6例胃肠道黏膜相关淋巴组织（mucosa-associated lymphoid tissue,MALT)淋巴瘤并结合文献探讨其影像学表现。方法 搜集经病理证实的胃肠道MALT淋巴瘤6例，其中来源于胃4例，十二指肠及回肠各1例，所有病例均经胃肠钡餐造影（GI）、CT或MRI检查。并复习了近几年国内外文献报道的胃肠道MALT淋巴瘤的临床及影像学表现。结果 根据该组病例临床及影像学所见，胃肠道MALT淋巴瘤临床及影像学特征为：（1）年龄在50岁以上，多为I－Ⅱ期低度恶性肿瘤，病程长，进展缓慢，症状轻，疗效好；（2）绝大多数幽门螺杆菌阳性，特别是胃MALT淋巴瘤；（3）GI示胃小区不规则增宽，多发性黏膜下小结节和多发边缘模糊的浅表溃疡，胃肠道黏膜皱襞粗大、紊乱迂曲，晚期呈多发息肉样结节、肿块及较大溃疡。CT及MRI表现为胃肠道壁环形光滑或小结节样增厚，肠MALT淋巴瘤可致肠腔狭窄。多发细小黏膜下病灶及多种征象共存是该病最重要的影像学特点。结论 典型影像学表现结合临床表现，可作出胃肠道MALT淋巴瘤的诊断。     

胃黏膜相关淋巴组织淋巴瘤临床病理学观察

目的 :研究胃黏膜相关淋巴组织 (MALT)淋巴瘤的临床病理学特点。方法 :收集 2 4例原发于胃的MALT淋巴瘤 ,石蜡切片 ,HE染色 ,组织病理学观察 ,免疫组化S -P法检测。结果 :本组发病男女比为 2∶1,年龄 19～ 82岁 ,平均 5 1.5 6岁。术前均作胃镜活检。形态学表现高恶性 3例 ,低恶性 2 1例中 2例临床为高恶性。结论 :胃MALT型淋巴瘤临床表现、胃镜与影像学检查不能与胃癌鉴别 ,正确诊断依赖病理活检。早诊断早治疗 ,包括外科治疗、放疗、化疗 ,同时辅以抗幽门螺杆菌 (Helicobacterpylon ,HP)治疗 ,以提高患者生存期和治愈率     

胸腺原发性黏膜相关淋巴组织淋巴瘤2例

例1女,41岁.体检发现纵隔肿物入院,主诉口干、眼干等症状,入院诊断为干燥综合征.行胸部CT平扫和增强(图1A～C),显示前上纵隔可见密度不均的结节影,大小为2.0 cm×1.5 cm,边缘光整、锐利,平扫CT值约为21 HU,增强两期CT值分别为62 HU、67 HU,呈环形不均匀强化.影像诊断:胸腺瘤.全麻下行胸腔镜经右纵隔肿物及全胸腺切除术,术中见不规则的灰白肿物,一侧有包膜.切面灰白,略显黏液样外观,分叶状,质脆,未累及胸膜被膜.免疫组化结果显示(图1D):CD20(+),CD21 FDC(网+),CD3(-),CD34血管(+),CD79α(+),CK上皮(+),Ki-67(+10％),Kappa少量(+),Lambda多量(+).光镜下所见(图1E):淋巴组织增生,见大量大小较一致的异型细胞,异型细胞排列密集,胞质较少,局部可见淋巴上皮病变.病理诊断:胸腺黏膜相关淋巴组织淋巴瘤.术后6个月随访,未见复发和转移.     

Pulmonary mucosa-associated lymphoid tissue lymphoma: CT and pathologic findings

OBJECTIVE: The objective of this study was to determine the CT findings in pulmonary mucosa-associated lymphoid tissue lymphoma and to correlate these CT findings with histologic specimens. CONCLUSION: In the 11 patients reviewed, the most common CT appearance of pulmonary mucosa-associated lymphoid tissue lymphoma was consolidation with air bronchograms, correlating histologically with a cellular lymphocytic infiltrate expanding the interstitium and compressing adjacent alveoli, producing air bronchograms.     

胸腺原发黏膜相关淋巴组织淋巴瘤的CT诊断

目的探讨胸腺原发性黏膜相关淋巴组织淋巴瘤(MALToma)的CT表现和诊断价值。方法搜集本院经病理证实的胸腺原发MALToma 7例。观察胸腺MALToma的CT特征,并与6例胸腺癌及6例胸腺弥漫大B细胞淋巴瘤的CT表现进行对照。结果7例MALToma患者中男性2例,女性5例,年龄<40岁者5例(5/7),与胸腺癌(0/6)相比P<0.05),而与弥漫大B细胞淋巴瘤(6/6)比较无统计学差异;胸腺MALToma所有病灶均呈单侧生长(7/7),与弥漫大B细胞淋巴瘤(1/6)比较P<0.05,而与胸腺癌(5/6)比较无统计学意义;所有MALToma病灶均呈囊实性肿块(7/7),囊变区呈小而多发,囊与囊之间分界清楚,囊壁光滑,胸腺癌囊变多呈单个大片坏死(4/6),边缘欠清,弥漫大B细胞淋巴瘤囊变较少见(2/6,P<0.05);所有MALToma病灶均无纵隔淋巴结肿大(0/7),胸腺癌中2例出现淋巴结肿大(2/6),两者比较无统计学差异,而弥漫大B细胞淋巴瘤均有纵隔淋巴结肿大(6/6,P<0.05);所有MALToma病灶均未出现周围大血管侵犯(0/7),与弥漫大B细胞淋巴瘤(5/6)比较P<0.05,而与胸腺癌(2/6)比较无统计学差异。结论CT表现在胸腺原发性MALToma的诊断中具有一定价值。     

CT appearances of mucosa-associated lymphoid tissue (MALT) lymphoma

Mucosa-associated lymphoid tissue (MALT) lymphoma is a low-grade lymphoma that differs from high-grade non-Hodgkin lymphoma both clinically and histologically. The CT appearances of MALT lymphoma are described. Of 40 patients referred with biopsy-proven MALT lymphoma, only seven had not had gastrectomy or chemotherapy prior to CT examination. The CT scans of these seven cases were analysed for the degree and extent of gastric wall thickening, enlargement of abdominal and extra-abdominal lymph nodes, and presence of extranodal disease. In all patients the stomach was distended with oral contrast medium and scans performed at narrow collimation, after intravenous administration of 20 mg hyoscine butylbromide. In six patients focal thickening of the gastric wall was 1 cm or less. One patient had thickening of over 4 cm. There was no enlargement of abdominal or extra-abdominal lymph nodes or extension to adjacent organs. Thus on CT, at presentation, MALT lymphoma results in minimal gastric wall thickening, unlike high-grade non-Hodgkin lymphoma, which typically causes bulky gastric disease, nodal enlargement and extension into adjacent organs. CT is therefore of limited value in monitoring response to treatment. With disease greater than minimal thickening, transformation to a higher grade should be considered. Received: 22 April 1998; Accepted: 27 October 1998     

胸膜粘膜相关性淋巴瘤CT表现1例

患者男,61岁.无明显诱因出现咳嗽、少量白痰,伴胸背部疼痛,咳嗽或深呼吸时加重,活动后感气促,实验室检查无明显异常.胸部CT:平扫发现右后纵隔脊柱旁沿胸膜匍匐生长的大片状软组织密度影,部分呈结节状突向肺内,并可见胸膜钙化内移(图1),密度均匀,平扫CT值43 HU,最大层面大小约12.5 cm×8.4cm(图2),气管...     

原发性颅内外侵犯的黏膜相关性淋巴组织淋巴瘤一例

患者女,51岁.2006年6月无意中发现左侧头部隆起包块,无明显异常感觉,无红肿热痛,包块缓慢略增大,于2007年3月来我院就诊.体检发现左额、顶、颞部多发隆起包块,无明显压痛,质中等,无波动感,表面未见血管异常改变,皮肤温度正常,无抽搐,无恶心呕吐,无手足麻木及四肢障碍.脑脊液检查正常,脑脊液培养+药敏实验阴性.     

Low-grade gastric mucosa-associated lymphoid tissue lymphoma: correlation of radiographic and pathologic findings.

PURPOSE: To describe upper gastrointestinal (Gl) examination findings of low-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma and to correlate them with pathologic examination findings. MATERIALS AND METHODS: A retrospective review of upper Gl examinations was performed in 25 patients with proved low-grade gastric MALT lymphomas. Upper Gl examinations were reviewed for common findings and most probable diagnosis, and these findings were correlated with pathologic findings in resected specimens in 15 patients. RESULTS: The common findings at upper Gl examination included mucosal nodularity (n = 13), ulcer (n = 12), rugal thickening (n = 6), mass (n = 4), and enlarged areae gastricae (n = 2). The most probable diagnoses were early gastric carcinoma (n = 7), advanced gastric carcinoma (n = 6), gastritis (n = 9), and lymphoma (n = 3). Of 17 lesions found on resected specimens, six ulcers and two masses were not depicted at barium study. Disorganized convergent rugae projecting to multiple points and vague ulcer margins were present in four and seven lesions, respectively. Multiple ulcers were seen in two patients. CONCLUSION: Although the common radiographic and pathologic findings observed in low-grade gastric MALT lymphomas were similar to those of gastric carcinomas or gastritis, disorganized convergent rugae, vague ulcer margins, and multiplicity of lesions may be helpful in differentiating them from gastric carcinomas or gastritis.     

眼眶原发性黏膜相关淋巴组织淋巴瘤的CT、MRI诊断

目的 探讨CT、MRI对眼眶原发性黏膜相关淋巴组织淋巴瘤( mucosa-associated lymphoid tissue lymphoma,MALToma )的综合诊断价值.方法 收集经手术病理证实的眼眶原发性MALToma 12例,其中11例行眼眶MR扫描,6例行眼眶CT扫描.重点观察眼眶原发性MALToma病灶的数目、位置、形态、对眶周结构的侵犯及影像学特征.结果 12例中,单侧发病10例,双侧发病1例,另1例首先左眼发病,手术切除病灶2年后右眼再发.CT、MRI能准确地反映病灶的眶内位置、形态及邻近结构的累及情况.6例眼眶MALToma病例CT上均表现为等-稍高密度软组织肿块,CT值介于46~66 HU.其中1例行增强扫描,其病灶平扫CT值66 HU,增强后CT值约94 HU,强化均匀.所有病灶均未伴发肿瘤灶内钙化及周边骨质侵犯.11例眼眶MALToma病例行MRI检查,T1加权呈等-稍高信号,T2加权呈等-稍高信号,信号均匀.其中7例行增强扫描,病灶呈中度至明显均匀强化.结论 常规CT及MRI扫描均有利于眼眶原发性MALToma的定位诊断,其特征性的影像学表现可提高术前定性诊断率.     

Gastric mucosa-associated lymphoid tissue lymphoma: helical CT findings and pathologic correlation

OBJECTIVE: The purpose of this study was to describe helical CT findings of gastric mucosa-associated lymphoid tissue (MALT) lymphoma and to correlate them with pathologic findings. MATERIALS AND METHODS: We retrospectively reviewed CT examinations of 58 patients with confirmed gastric MALT lymphomas. Using the histopathologic grade of the MALT lymphomas, we divided the patients into two groups: those with high-grade lymphoma (n = 21) and those with low-grade lymphoma (n = 37). Common CT findings for the two groups were reviewed and compared. RESULTS: Forty (69%) of the 58 patients showed at least one abnormality of the stomach on CT. Abnormalities included diffuse or segmental gastric wall thickening (66%, 38/58), lymphadenopathy (40%, 23/58), ulcer (22%, 13/58), and gastric mass (3%, 2/58). Eighteen (31%) of 58 patients were found to have no abnormality. The high-grade group had a higher incidence of abnormalities seen on CT than the low-grade group (100% vs 51%, respectively). Gastric wall thickening in the high-grade group was more diffuse (48% vs 8%) and severe (71% vs 14%; severe or moderate) than that seen in the low-grade group. Lymphadenopathy was visualized in 67% of the high-grade group and in 24% of the low-grade group. Gastric ulcer was found in 57% of the high-grade group and in only 5% of the low-grade group. The gastric mass formation was seen in only two patients in the high-grade group. CONCLUSION: The CT findings of gastric MALT lymphoma that the two groups had in common were gastric wall thickening and lymphadenopathy. Although our results pointed to no specific CT finding for differentiating high-grade from low-grade gastric MALT lymphomas, we found that the absence of abnormality on CT is highly predictive of low-grade MALT lymphoma.     

Primary ureteral mucosa-associated lymphoid tissue (MALT) lymphoma--pathological and radiological findings

In this report we describe the pathological and radiological findings in a patient with primary ureteral MALT lymphoma. We suggest that it is useful for the differential diagnosis of ureter masses that some MALT lymphomas may show a low signal intensity on T2-weighted MR images.     

肺黏膜相关淋巴组织淋巴瘤的CT和临床表现及其病理学基础

目的:探讨肺黏膜相关淋巴组织(MALT)淋巴瘤的CT表现特征及与其临床、病理表现的关系.方法:回顾性分析22例经病理确诊的肺MALT淋巴瘤患者的影像学和临床资料.22例中2例合并肺癌,5例同时有肺外累及.结果:本组患者的主要临床症状包括咳嗽咳痰12例、喘憋7例、发热4例、胸痛2例、咯血2例、盗汗2例,有2例患者无明显症状.22例的主要表现可分为2型,实变型16例(16/22,73％),肿块/结节型7例(7/22,32％).病灶密度均匀15例(15/22,68％),增强扫描均明显强化,可见血管造影征;病灶边缘均可见晕征,空气支气管征19例(19/22,86％),伴支气管扩张15例(15/22,68％).其它表现包括肺内多发小结节14例(64％),磨玻璃影11例(50％),树芽征4例(18％),胸腔积液9例(41％),肺门及纵隔淋巴结增大6例(27％).合并肺癌者CT表现为肺内单发肿块伴周围明显间质性浸润.结论:肺MALT淋巴瘤的临床表现无特异性,但其CT表现有一定特征性,对本病的诊断及鉴别诊断有重要的提示作用,确诊需依靠病理活检.     

Marginal zone B-cell non-Hodgkin's lymphoma of mucosa-associated lymphoid tissue type: imaging findings

OBJECTIVE: The aim of this essay is to describe the imaging features of marginal zone B-cell lymphoma of the mucosa-associated lymphoid tissue (MALT) type throughout various organs. CONCLUSION: Awareness of the expected locations of MALT lymphoma combined with knowledge of the incidence and imaging findings leads to accurate diagnosis of lesions suspicious for this disorder and helps to differentiate this disease from other abnormalities.     

胃MALT淋巴瘤54例临床分析

目的 探讨胃黏膜相关淋巴样组织(MALT)淋巴瘤的临床诊断与治疗.方法 回顾性分析手术切除并经病理证实的54例胃MALT淋巴瘤的诊断与治疗情况,并对其中48例进行随访,随访时间为12～159个月.结果 胃MALT淋巴瘤临床表现以腹痛和腹部不适常见,术前胃镜及病理活检确诊率达 85.2%(46/54),幽门螺杆菌检出阳性率88.9%(48/54),全组手术切除率87%(47/54),5、10年生存率分别为77.1%和72.9%.结论 幽门螺杆菌感染与胃MALT淋巴瘤存在一定关联.胃MALT淋巴瘤无特异临床症状,术前诊断均依靠胃镜及活检.对于胃MALT淋巴瘤,根除Hp治疗,外科手术切除原发灶,联合术后化疗或放疗是合理的.