Hyalinizing trabecular tumor of the thyroid gland and its significant diagnostic issue

Hematoxylin and Eosin stain of aspirate material from FNA of left thyroid lobe nodule. a Cellular aspirate smear consisting of epithelial elements admixed with red blood cells (200X). b Follicular cells with elongate/spindle nuclei, dispersed chromatin, and abundant eosinophilic granular cytoplasm (400X