1
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found

      Multiple Endocrine Neoplasia

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Multiple endocrine neoplasia (MEN) is characterized by the occurrence of tumours involving two or more endocrine glands; two major forms, referred to as MEN1 and MEN2, are recognized. MEN1 is characterized by parathyroid, pancreatic islet and anterior pituitary tumours, whilst MEN2 is characterized by medullary thyroid carcinoma (MTC) in association with phaeochromocytoma. There are three clinical variants, referred to as MEN2A, MEN2B and MTC-only. All these forms of MEN may be inherited as autosomal dominant syndromes. The MEN1 gene is on chromosome 11q13 and about 300 MEN1 mutations have been identified. These are of diverse types and are scattered throughout the coding region. There is also a lack of genotype-phenotype correlation. All these findings make it difficult to implement MEN1 mutational analysis in the clinical setting. The situation in MEN2 is more straightforward. The gene causing all three MEN2 variants is located on chromosome 10cen-10q11.2, and is the c-ret proto-oncogene which encodes a tyrosine kinase receptor with cadherin-like and cysteine-rich extracellular domains, and a tyrosine kinase intracellular domain. Specific mutations of c-ret have been identified for each of the three MEN2 variants and mutational analysis has been used in the diagnosis and management of patients and families with the MEN2 variants.

          Related collections

          Most cited references 3

          • Record: found
          • Abstract: not found
          • Article: not found

          Positional Cloning of the Gene for Multiple Endocrine Neoplasia-Type 1

            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Multiple facial angiofibromas and collagenomas in patients with multiple endocrine neoplasia type 1.

            To evaluate patients with multiple endocrine neoplasia type 1 (MEN 1) for cutaneous manifestations. Survey during a 3-year period. The National Institutes of Health, a tertiary referral research hospital in Bethesda Md. A consecutive sample of 32 individuals with previously diagnosed MEN1 who were not preselected for the presence of skin lesions were examined for cutaneous abnormalities. None of the patients or family members were diagnosed as having tuberous sclerosis. Lesions were identified by clinical appearance, photographed, and confirmed histologically. To determine the frequency of skin lesions in patients with MEN1. Multiple facial angiofibromas were observed in 28 (88%) of the patients with MEN1, with 16 patients (50%) having 5 or more. Angiofibromas were clinically and histologically identical to those in individuals with tuberous sclerosis. Collagenomas were observed in 23 patients (72%). Also observed were cafe au lait macules in 12 patients (38%), lipomas in 11 patients (34%), confetti-like hypopigmented macules in 2 patients (6%), and multiple gingival papules in 2 patients (6%). Multiple angiofibromas, collagenomas, lipomas, confetti-like hypopigmented macules and multiple gingival papules are cutaneous manifestations of MEN1 and should be looked for in both family members of patients with MEN1 and individuals with hyperparathyroidism of other MEN1-associated tumors. Multiple angiofibromas can no longer be considered pathognomonic for tuberous sclerosis. The observation of angiofibromas in individuals without tuberous sclerosis necessitates further biochemical testing for MEN1.
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Seminars in medicine of the Beth Israel Hospital, Boston. The RET proto-oncogene in multiple endocrine neoplasia type 2 and Hirschsprung's disease.

               C Siew-Eng (1996)
                Bookmark

                Author and article information

                Journal
                HRE
                Horm Res Paediatr
                10.1159/issn.1663-2818
                Hormone Research in Paediatrics
                S. Karger AG
                978-3-8055-7369-6
                978-3-318-00810-4
                1663-2818
                1663-2826
                2001
                January 2002
                17 November 2004
                : 56
                : Suppl 1
                : 67-72
                Affiliations
                Molecular Endocrinology Group, Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford, UK
                Article
                48138 Horm Res 2001;56(suppl 1):67–72
                10.1159/000048138
                11786689
                © 2001 S. Karger AG, Basel

                Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

                Page count
                Figures: 2, Tables: 1, References: 19, Pages: 6
                Categories
                Paper

                Comments

                Comment on this article