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Multiple endocrine neoplasia type 2b in twins

H Galera, R Gonzalez-Campora, A Matilla

    Histopathology
    |January 1, 1982
    PubMed
    Summary

    Multiple Endocrine Neoplasia (MEN) type 2b, a rare genetic disorder, typically runs in families. This study details the second reported case of MEN type 2 in twins, highlighting a unique combination of symptoms.

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    Area of Science:

    • Endocrinology
    • Genetics
    • Oncology

    Background:

    • Multiple Endocrine Neoplasia (MEN) type 2b is a rare genetic disorder characterized by medullary thyroid carcinoma, phaeochromocytoma, ganglioneuromatosis, and Marfan-like features.
    • While often familial, MEN type 2b can arise from spontaneous genetic mutations.
    • Previous literature documents only one other instance of MEN type 2 in twins.

    Observation:

    • This paper presents the second documented case of MEN type 2 occurring in twins.
    • The observed twin pair exhibited a specific constellation of MEN type 2b features, including medullary thyroid carcinoma, Marfan-like habitus, and multiple mucosal neuromas.
    • This represents the first reported instance of this particular combination of symptoms in a twin study.

    Findings:

    • The study confirms the occurrence of MEN type 2b in a twin pair, adding to the limited existing data.
    • The specific presentation in this case included medullary thyroid carcinoma, Marfan-like features, and multiple neuromas, a combination previously undescribed in twins.
    • The findings underscore the potential for spontaneous genetic mutations to manifest MEN type 2b within multiple births.

    Implications:

    • This case report expands the understanding of MEN type 2b's genetic basis and phenotypic variability, particularly in familial contexts like twins.
    • It highlights the importance of considering genetic disorders like MEN type 2b in the differential diagnosis of twins presenting with related symptoms.
    • Further research into the genetic and epigenetic factors influencing MEN type 2b expression in twins may be warranted.

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