Figure 2
From: Concomitant pulmonary and thyroid tumors identified by FDG PET/CT and immunohistochemical techniques
HE histological staining of the resected lung (L) and thyroid tumor tissue (T): The lining cells in resected lung tumor tissue were cuboidal to columnar, similar to the papillary carcinoma of the thyroid. IHC staining: negative immunoreactivity of CK20 and thyroglobulin but positive of CK7 and TTF-1 in the lung tumor; positive immunoreactivities of CK7, TTF-1 and thyroglobulin but not CK20 were found in the thyroid tumor.