30 June 2026
: Case report 
Delayed Thyroid Metastasis of Lung Adenocarcinoma Mimicking Primary Thyroid Carcinoma: A Case Report
Challenging differential diagnosis, Rare coexistence of disease or pathology
Yen Thi Le
AD 1, Hau Xuan Nguyen ADF 2,3,4*, Thai Hong Le BCE 1, Anh Tuan Doan Van BCEF 2, Duong Thai Pham BCE 3, Tuan Minh Vu BCE 3, Hoang Van Nguyen BCE 2
DOI: 10.12659/AJCR.952744
Am J Case Rep 2026; 27:e952744
Figure 3 Immunohistochemical staining for Thyroglobulin (clone EP250, Cell Marque) (A) and PAX8 (clone MRQ-50, Cell Marque) (B) was negative in tumor cells (original magnification ×200). These findings supported the diagnosis of metastatic pulmonary adenocarcinoma involving the thyroid gland.