Fig. 6From: Thyroid primary and metastatic malignant tumours of poor prognosis may mimic subacute thyroiditis - time to change the diagnostic criteria: case reports and a review of the literatureFNAB smear reveals groups, patches and shreds of tissues formed of anaplastic epithelial cells, partially spindle-shaped (light microscopy, hematoxylin-eosin staining; magnification × 500)Back to article page