Fig. 6
a Neoplastic parafollicular cells showing plasmacytoid and spindle shapes (Papanicolaou, ThinPrep, ×500). b The same cells are strongly positive for calcitonin, confirming the diagnosis of medullary carcinoma (ABC, ThinPrep, ×1,000).
a Neoplastic parafollicular cells showing plasmacytoid and spindle shapes (Papanicolaou, ThinPrep, ×500). b The same cells are strongly positive for calcitonin, confirming the diagnosis of medullary carcinoma (ABC, ThinPrep, ×1,000).
