The cribriform-morular variant of papillary thyroid carcinoma (CMV-PTC) is a very rare histological subtype of thyroid carcinoma, accounts for only 0.1–0.2% of all papillary thyroid cancers, and was described for the first time in 1994 as a particular thyroid carcinoma observed especially in patients with FAP [13]. The gene discussed is FAP; the disease is differentiated thyroid carcinoma.