Figure 2From: Lung nodule detected by F-18 fluorodeoxyglucose positron emission tomography-computed tomography in patients with papillary thyroid cancer, negative 131I whole body scan, and undetectable serum-stimulated thyroglobulin levels: two case reports The tumor cells have large round to oval pale nuclei, intranuclear inclusion, intranuclear groove and abundant cytoplasm (hematoxylin and eosin × 400) (A). Immunohistochemical stain of thyroid transcription factor-1 reveals diffuse strong positivity in nuclei of tumor cells (B). Immunohistochemical stain of thyroglobulin shows positive result in cytoplasm of tumor cells (C).Back to article page