多发性内分泌腺瘤病Ⅱb型(附一例报告)

本文报告一例同时患有甲状腺髓样癌双侧肾上腺嗜铬细胞瘤、多发性粘膜神经瘤、巨结肠症的病人,符合典型的MENⅡb型。结合文献复习,对本病临床特征进行了详细讨论。     

多发性内分泌腺瘤病1例

多发性内分泌腺瘤病（multiple endocrine neoplasia,MEN）为一组遗传性多种内分泌组织发生肿瘤综合症的总称,指病人先后或同时发生两个或两个以上的内分泌腺肿瘤（或增生）的临床现象。该病为常染色体显性遗传,起病多在18～25岁,90%在50岁前发生,男女患病率相仿,其患病率约为2～20/10万人[1]。我院最近诊治1例MEN,现报告如下,并结合文献作一探讨。     

多发性内分泌腺瘤病2b型患者眼部特征分析

目的 研究多发性内分泌腺瘤病2b型患者的眼部表现特征.方法 回顾分析北京协和医院眼科1980年7月至2007年12月3例多发性内分泌腺瘤病2b型患者的临床资料,重点分析其眼部表现特征.结果 在常见的全身表现和眼部表现中,3例患者均有甲状腺髓样癌和角膜神经粗大,2例患者有肾上腺嗜铬细胞瘤、口唇舌黏膜神经瘤、类马方体型、眼睑结节、结膜结节,仅1例患者有虹膜结节.结论 角膜神经粗大是MEN 2b型最常见的眼部表现.     

多发性内分泌腺瘤病2A型一例报告

目的 讨论一例多发性内分泌腺瘤病2A型(MEN2A)的特点。方法 收集患者临床病史、生化和影像学检查结果；提取外周血基因组DNA，对RET原癌基因第ll外显子进行聚合酶链反应，反应产物进行直接基因测序。结果 该患者病理证实为双侧肾上腺嗜铬细胞瘤，同时伴有血清降钙素水平明显升高的甲状腺占位性病变以及血清PTH升高的甲状旁腺占位性病变(腺瘤)；分子生物学研究发现患者存在RET原癌基因第ll外显子634密码子错义突变。结论 总结该病例的临床特点对早期发现、诊断和治疗该疾病具有指导意义。     

多发性内分泌腺瘤病2A型一例报告

目的讨论一例多发性内分泌腺瘤病2A型(MEN 2A)的特点.方法收集患者临床病史、生化和影像学检查结果;提取外周血基因组DNA,对RET原癌基因第11外显子进行聚合酶链反应,反应产物进行直接基因测序.结果该患者病理证实为双侧肾上腺嗜铬细胞瘤,同时伴有血清降钙素水平明显升高的甲状腺占位性病变以及血清PTH升高的甲状旁腺占位性病变(腺瘤);分子生物学研究发现患者存在RET原癌基因第11外显子634密码子错义突变.结论总结该病例的临床特点对早期发现、诊断和治疗该疾病具有指导意义.     

Multiple endocrine neoplasia type 2B. A case report and review of the syndrome

This paper presents a case of the very rare multiple endocrine neoplasia Type 2B syndrome. It highlights that because of the presence of superficial neuromas in this condition, there is the possibility for early diagnosis. Recent knowledge of the molecular genetics of this syndrome and the ability to screen family members is also stressed since early thyroidectomy is now recommended to prevent the development of thyroid carcinoma which is the main determinant of prognosis.     

Multiple endocrine neoplasia type 1--presenting with impotence

A 35-year old man presented with a 4-year history of impotence. His past history was significant for hypercalcaemia, bilateral pyelolithotomies for renal calculi and parathyroidectomy for hyperparathyroidism. He had an episode of haemetemesis and malaena a year before being seen here. Endocrine investigations revealed hyperprolactinemia, hypergastrinemia and increased basal acid output. Magnetic resonance imaging of the brain was indicative of a pituitary microadenoma. Computed tomographic scan of the abdomen revealed a bulky pancreas which was suggestive of a gastrin-secreting islet cell tumour. This case illustrates an unusual presentation of multiple endocrine neoplasia type 1 (MEN-1) with impotence and hyperprolactinemia. A short review of the literature was done.     

多发性内分泌腺瘤综合征1型1例报告

1 病例资料 女,65岁,因＂发作性晨起心悸、抽搐15＋年,再发1h＂入院.入院前15＋年,常于凌晨无明显诱因出现心悸、大汗,继发意识丧失、抽搐,每次持续2 h～3 h,可自行缓解,无明显饥饿感,发作间期正常,入院前1 h再发类似症状.发病后体重增加约15 kg.无类似家族史.     

多发性内分泌肿瘤1型6例及其家系研究

目的:分析6例多发性内分泌肿瘤1型(MEN1)患者及其家系成员的临床特点,研究MEN1基因突变特征?方法:收集患者及家系成员的临床资料,提取6例患者及其各自家系成员(共13例)外周血DNA,对MEN1基因编码区9个外显子进行PCR扩增,产物直接测序?结果:家系1中2例患者和2例家系成员MEN1基因第10外显子存在杂合突变c.1378C>T,家系2中1例患者MEN1基因第2外显子存在杂合突变c.80C>G,家系3中先证者及其母亲MEN1基因第9外显子存在杂合突变c.1225T>C,其余人员均未发现突变?其中MEN1基因突变c.80C>G和c.1225T>C为新发现的突变类型,c.1378C>T为已知突变类型?结论:MEN1基因突变分析有助于MEN 1患者早期诊断及其亲属的筛查?本研究发现2种新的MEN1突变类型能增加研究者对于MEN1遗传学特征的认识?     

Multiple endocrine neoplasia, type II: a combined surgical and genetic approach to treatment.

A family with multiple endocrine neoplasia, type II living in southeastern Ontario is described. Twenty individuals are known to have had medullary carcinoma of the thyroid, pheochromocytoma or both, the diagnosis of multiple endocrine neoplasia. type II is strongly suspected in five other individuals in the earlier generations. In this family the diseases seems to be transmitted by an autosomal dominant gene. A screening program set up for the family in 1977 has in 2 years identified four asymptomatic individuals (three with medullary carcinoma of the thyroid and one with this carcinoma and a pheochromocytoma). The family background, clinical picture, treatment and some of the problems of the screening program are described.     

Multiple endocrine neoplasia type 2B caused by a single point mutation in RET proto-oncogene in a Chinese patient

Multiple endocrine neoplasia type 2(MEN 2) is a hereditary syndrome which can present itself either in a familial form.characterized by a dominant pattern of inheritance,or in a sporadic form.It can be subdivided into multiple endoerine neoplasia type 2A(MEN-2A),multiple endoerine neoplasia type 2B(MEN-2B).and familial medullary thyroid careinoma(FMTC).     

Multiple endocrine neoplasia type 2B caused by a single point mutation in RET proto-oncogene in a Chinese patient

Multiple endocrine neoplasia type 2 (MEN 2) is a hereditary syndrome which can present itself either in a familial form, characterized by a dominant pattern of inheritance, or in a sporadic form. It can be subdivided into multiple endocrine neoplasia type 2A (MEN-2A), multiple endocrine neoplasia type 2B (MEN-2B), and familial medullary thyroid carcinoma (FMTC).1-3 Among these conditions, MEN-2B, which has an extremely low rate of incidence, is the most severe form. Its clinical presentation includes C-cell hyperplasia or medullary thyroid carcinoma, pheochromocytoma, ganglioneuromatosis, accompanied with Marfanoid body habitus.4-8 Using the methods of single-strand conformational polymorphism (SSCP) and direct gene sequencing, Hofstra et al9 and Calson et al10 showed for the first time that MEN-2B is associated with a mutation in the RE arranged during transfection (RET) proto-oncogene, which is a receptor-type tyrosine kinase. The RET gene is located in the centromeric region of chromosome 10q11.2, and consists of 21 exons. Over 95% of MEN-2B patients have a specific point mutation at codon 918 in exon 16 of RET, resulting in the replacement of methionine with threonine [918Met(ATG)→Thr(ACG)].11-16 Although there have been many reports on the gene mutation associated with MEN-2B,17-19 there has been no previous reports on similar genetic studies in Chinese patients. In this study, we identified a MEN-2B Chinese patient and tried to establish the relationship between an RET gene mutation and the onset of MEN-2B, in order to further understand the hereditary characteristics of this disease and a basis for early diagnosis and early intervention.     

多发性内分泌瘤病2A型13例临床分析

目的探讨多发性内分泌瘤病2A型（MEN-2A型）的临床特点和治疗方法。方法回顾性分析1988年至2011年我院收治的13例MEN－2A型患者的临床资料。13例均为嗜铬细胞瘤伴甲状腺髓样癌,无甲状旁腺功能亢进。其中8例甲状腺髓样癌发病早于嗜铬细胞瘤,5例同时伴发嗜铬细胞瘤。均行嗜铬细胞瘤切除,其中9例行双侧肾上腺肿物切除,4例行腹腔镜肾上腺肿物切除术;10例行甲状腺癌根治术,颈部淋巴结清扫,3例行甲状腺单侧叶切除术。结果术后病理检查,肾上腺均为嗜铬细胞瘤,其中恶性倾向3例;甲状腺均为甲状腺髓样癌。13例术后均随访至2012年6月,存活10例,死亡3例,死因均为甲状腺髓样癌远处转移。结论此病罕见,手术是治疗该病的惟一方法,当嗜铬细胞瘤与甲状腺髓样癌同时存在时,首先应切除嗜铬细胞瘤。     

一个多发性内分泌腺瘤病2型家系的RET 基因检测

目的：对一个多发性内分泌腺瘤病2型（ multiple endocrine neoplasia 2,MEN2）家系进行RET基因检测,明确诊断和分型,指导治疗、预防及改善预后。方法采用聚合酶链反应和直接基因测序的方法,对一个临床诊断MEN2的家系（共3名家系成员）和3例正常对照的RET原癌基因21个外显子进行测序。结果该家系中的2例患者和1例无症状一级亲属均为RET原癌基因外显子11第634号密码子位点的杂合错义突变TGC→CGC,半胱氨酸→精氨酸（ C634R）。结论通过RET基因检测明确该家系为多发性内分泌腺瘤病2A型,对家系中患者的治疗和随访起到了指导作用,并筛查出家系中无症状的基因突变携带者。     

Multiple endocrine neoplasia associated with von Recklinghausen's disease

Details were studied of three patients with duodenal carcinoid tumour in association with neurofibromatosis and phaeochromocytoma, and of four patients with duodenal carcinoid and either von Recklinghausen's disease or phaeochromocytoma. The rarity of these endocrine tumours, together with the unusual morphological features and somatostatin content of the two duodenal carcinoids examined, suggest that this combination of tumours is not a chance association. It is suggested that this linkage of neurofibromatosis, phaeochromocytoma, and duodenal carcinoid is a specific multiple endocrine neoplasia syndrome.