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Figure 3 | Journal of Cardiothoracic Surgery

Figure 3

From: Primary pulmonary adenocarcinoma mimicking papillary thyroid carcinoma

Figure 3

Immunohistochemistry showed that TTF-1 was diffusely and strongly nuclear positive in pulmonary tumor tissue (A, ×200). SPA was diffusely and strongly plasma positive in pulmonary tumor tissue (B, ×200) and lymph node (C, ×200). Thyroglobulin was negative in pulmonary tumor tissue (D, ×200). Thyroglobulin was positive in thyroid tissue as a positive control (E, ×200). TTF-1, thyroid transcriptor factor-1; SPA, surfactant apoprotein A.

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