(A) Hematoxylin-eosin (×400). Lung parenchyma with metastasis from the primary parathyroid carcinoma. (B) Immunohistochemical analysis of PTH expression (×400). Diffuse intensive expression of PTH by the lung metastasis from the primary parathyroid carcinoma.

Figure 2: (A) Hematoxylin-eosin (×400). Lung parenchyma with metastasis from the primary parathyroid carcinoma. (B) Immunohistochemical analysis of PTH expression (×400). Diffuse intensive expression of PTH by the lung metastasis from the primary parathyroid carcinoma.

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