A 40-year-old male is operated on for a medullary carcinoma of the thyroid. He expresses concern about his 10 years son getting the disease. The best test:

yearly pentagastrin-stimulated calcitonin in son

DNA analysis for RET proto-oncogene in tumor

DNA analysis for RET proto-oncogene in peripheral blood

A 40-year-old male is operated on for a medullary carcinoma of the thy

1.	A 40-year-old male is operated on for a medullary carcinoma of the thyroid. He expresses concern about his 10 years son getting the disease. The best test:
A.	Yearly calcitonin in son
B.	yearly pentagastrin-stimulated calcitonin in son
C.	DNA analysis for RET proto-oncogene in tumor
D.	DNA analysis for RET proto-oncogene in peripheral blood
E.	Thyroid ultrasound in son
Answer» E. Thyroid ultrasound in son

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A 40-year-old male is operated on for a medullary carcinoma of the thyroid. He expresses concern about his 10 years son getting the disease. The best test:

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