Diagnostic correlation between RET proto-oncogene mutation, imaging techniques, biochemical markers and morphological examination in MEN2A syndrome: case report and literature review

Vol. 55 No. 2 Suppl., 2014
This supplement was not sponsored by Outside Organizations.

ROMANIAN JOURNAL of MORPHOLOGY and EMBRYOLOGY

Alina Simona Sovrea, Eleonora Dronca, Mihaela Galatar, Serban Radian, Corina Vornicescu, Carmen Georgescu

Multiple endocrine neoplasia type 2 (MEN2) is a rare autosomal dominant monogenic disorder caused mostly by missense mutations in the RET (REarranged during Transfection) proto-oncogene on chromosome 10q11.2. MEN2A represents more than 50% of all MEN2 cases, having a regular pattern with medullary thyroid carcinoma (MTC) incidence of 90-100%, bilateral pheochromocytoma (PCC) incidence of 40-50% and primary hyperparathyroidism (HPT) incidence of 10-25%. Until recently, the diagnosis of MTC was most frequently based on fine-needle aspiration of thyroid nodules, after an ultrasound examination and endocrine evaluation of serum calcitonin levels. Nowadays, RET gene screening (starting with exons 10 and 11) is a mandatory test used for identification of both symptomatic and non-symptomatic MTC carriers or for exclusion of healthy individuals from subsequent periodical clinical/biochemical screening. In this context, and in the idea of PCC preceding MTC, the early detection of germline RET mutations are highly suggestive for hereditary disease. PCC diagnosis is established in classical manner by abdominal ultrasound imaging or computed tomography confirming the presence of adrenal gland masses, elevated plasma metanephrines and normetanephrines values and histopathological examination. Additional HPT diagnosis is acknowledged by serum ionized calcium and parathormone levels. Here we report a hereditary case of MEN2A in a two-generation Romanian family, along with data presenting the importance of correlative plurifactorial diagnostic scheme in this syndrome and a short literature review.

Corresponding author: Eleonora Dronca, MD, PhD; e-mail: nora_dronca@yahoo.com

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ROMANIAN JOURNAL of MORPHOLOGY and EMBRYOLOGY

Mariana Costache, Oana Maria Patrascu, Adrian Dumitru, Diana Costache, Liliana Mary Voinea, Olga Simionescu, Maria Sajin

Ocular melanoma is rare in clinical practice. In this study, we present three cases of ocular melanoma surgically removed in the Department of Ophthalmology of the Emergency University Hospital of Bucharest, Romania, and diagnosed in the Department of Pathology of the same hospital using conventional histopathological techniques and immunohistochemical tests._x000D_

Corresponding author: Mariana Costache, Associate Professor, MD, PhD; e-mail: m_costache_dermatopat@yahoo.com

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