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Details of metastatic lung nodules. a–c Three small nodules, in segments 2 and 9 of the right lung (RS2, RS9) and segment 1 + 2 of the left lung (LS1 + 2), detected in routine follow-up CT at 82 months after surgery. d–g All were pathologically well-differentiated adenocarcinoma and immunohistochemically positive for CK7 and negative for TTF-1- and CK20
