Figure 3From: Pulmonary adenocarcinoma metastasis to a dorsal root ganglion: a case report and review of the literature Histological findings. (A) Small nests of epithelial tumor cells growing within neuronal tissue (hematoxylin-eosin staining). Note the large ganglion cells (arrows). (B) On immunohistochemistry, the tumor cells stain strongly positive for thyroid transcription factor 1, suggesting origin from a lung carcinoma. Original magnification of each picture: ×400.Back to article page