Fig. 2From: Liver metastasis from papillary thyroid carcinoma treated by laparoscopic hepatectomy 43 years after resection of the primary tumor: a case reporta Pathological finding showing a dark brown tumor (arrow). b Microscopically, the tumor consists of atypical cell proliferation with a papillary structure. c Immunohistochemically, the resected specimen revealed that the tumors are positive for thyroid transcription factor-1 and paired box 8 and slightly positive for thyroglobulinBack to article page