Are kidney malformations an additional feature of MEN2B syndrome? – Case report and literature review
Autori:
Anita Špehar Uroić, Nataša Rojnić Putarek, Lucija Kolega Mrkić, Sanja Kusačić-Kuna, Ana Merkler Šorgić, Jadranka Sertić, Sanja Perić, Nevena Krnić
Sažetak
Summary
Multiple endocrine neoplasia type 2B (MEN2B) is a rare familial syndrome caused by autosomal dominant mutations in the RET proto-oncogene. The disease is characterized by aggressive, early-onset medullary thyroid carcinoma, pheochromocytoma, most often bilateral, and mucosal neuromas together with other distinctive extra-endocrine manifestations and phenotypic features that can help in recognizing the patients and diagnosing the disease. We present the patient with MEN2B syndrome, type 1 diabetes mellitus, situs inversus and congenital kidney and urinary tract malformation. Reviewing the literature revealed other reports on urinary tract malformations in patients suffering from MEN2B. The recognized role of RET gene in kidney development and urinary tract malformations suggests a possible etiological link with MEN2B syndrome. We suggest that urinary tract malformations might be a feature of MEN2B syndrome. As most of the phenotype characteristics of the syndrome develop with age, recognizing congenital malformation might help in early diagnosing and treating the patients.