Erschienen in:
01.09.2014 | Original Article
Familial Cushing syndrome due to thymic carcinoids in a multiple endocrine neoplasia type 1 kindred
verfasst von:
Xiaohua Li, Jing Su, Li Zhao, Jingcheng Wu, Xiaoying Ding, Fang Fang, Yijie Wu, Haiyan Sun, Yongde Peng
Erschienen in:
Endocrine
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Ausgabe 1/2014
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Abstract
The objective of this study is to present a familial Cushing syndrome (CS) caused by multiple endocrine neoplasia type 1 (MEN-1)-associated thymic carcinoid. Immunohistochemistry, gene sequencing, loss of heterozygosity analysis, and Western blot were used to determine the expression of ACTH in MEN-1-related thymic tumors, MEN1 gene mutation, the pattern and extent of allelic deletion, and the expression of Menin in MEN-1-associated tumors, respectively. Tumor cells from thymus ectopic-secreted ACTH. A deletion involving the MEN1 gene locus was confirmed. The expression of Menin in MEN-1-associated tumors declined. To conclude, we presented an unusual kindred of MEN-1, which pointed out the significance of making screening of MEN-1 for both male and female patients with CS and thymic carcinoid.