Endocrine Abstracts

Thyroid paraganglioma (TP) is a rare disorder that sometimes poses problems in differential diagnosis with medullary thyroid carcinoma (MTC). So far, differential diagnosis is solved with the help of some markers that are frequently expressed in MTC (TTF1, calcitonin, and CEA). However, some of these markers are not absolutely specific of MTC and may be expressed in other tumors. Here we report 3 new cases of TP and describe our strategy to design a diagnostic immunohistochemi...