A 7-year-old boy with a history of mild developmental delay was presented to the pediatric otolaryngology department with slow-growing nodules on his tongue. Physical examination of the tongue revealed multiple firm, painless nodules, high arched palate, and marfanoid habitus. Neck ultrasonography revealed hypoechoic thyroid nodules without cervical lymphadenopathy. Metanephrine levels were normal and calcitonin levels were found to be 407 ng/ L.

Genetic testing confirmed the presence of a pathogenic mutation in the RET proto-oncogene (RET). Based on the patient information, what could be the probable diagnosis? Multiple endocrine neoplasia type 2B Pheochromocytoma Parathyroid gland cancer Endocrine cancer Source : NEJM ##Disclaimer## The content provided on Docplexus is intended for educational purposes only. While we strive to ensure its accuracy, we make no warranties, explicit or…