A familial form of medullary thyroid carcinoma (MTC) should be suspected whenever:
A. The tumor is multifocal.
B. The tumor is bilateral (foci of tumor are present in both thyroid lobes).
C. Pathologic examination of the resected thyroid gland reveals the presence of C-cell hyperplasia in areas of the gland adjacent to foci of MTC.
D. All of the above.
Answer:D
A familial form of medullary thyroid carcinoma (MTC) should be suspected whenever:
A. The tumor is multifocal. B. The tumor is bilateral (foci of tumor are present in both thyroid lobes). C. Pathologic examination of the resected thyroid gland reveals the presence of C-cell hyperplasia in areas of the gland adjacent to foci of MTC. D. All of the above.