Figure 1.

Fine needle aspiration biopsy of enlarged porta hepatis node. A: Papanicolaou staining showed multiple intermediate-sized dysplastic cells with vacuolated cytoplasm and occasional markedly-enlarged malignant nuclei-forming lumina (× 40 magnification); B: Immunohistochemistry showed that tumor cells stained positive for alpha-fetoprotein (× 20 magnification); C: Tumor cells showed strong nuclear immunostaining for caudal-related homeobox transcription factor 2 (× 20 magnification); D: Staining for hepatocyte-specific antigen was unequivocal (× 20 magnification).