Monarch Disease Ontology id MONDO_0015447 (differentiated thyroid carcinoma) (DTC), also known as papillary or follicular thyroid carcinoma, is a slow-growing malignancy usually presenting in adults as an asymptomatic thyroid mass. Also known as: differentiated thyroid cancer, differentiated thyroid gland cancer, differentiated thyroid gland carcinoma, papillary or follicular thyroid carcinoma, thyroid gland differentiated carcinoma, thyroid gland well differentiated carcinoma, well differentiated thyroid carcinoma, well differentiated thyroid gland carcinoma.