Fig. 3

Microscopic findings. Microscopically, two types of atypical cells with enlarged heterozygous nuclei are observed in a part of the cyst wall. a–c Neuroblastic cells immunohistochemically positive for neuron-specific enolase [a hematoxylin/eosin (HE), × 100 magnification; b HE, × 400 magnification; and c neuron-specific enolase, × 400 magnification]. d–f Cells morphologically similar to ganglion cells and immunohistochemically positive for S-100 (d HE, × 100 magnification; e HE, × 400 magnification; and (f) S-100, × 400 magnification)