The shapes of neuronal cell bodies are spherical, ovoid , pyramial, fusiform, stellate or crescentic.

神经元细胞体的状有圆，卵圆，锥，梭，星月。

SMA staining was positive in basophilous small blocks, spindle or irregular cell cluster.Of the 218 cases, 56 cases had smooth muscle.

滑肌肌动蛋白染色显示嗜碱性的小状、梭不规则的细胞束呈阳性反应，证滑肌，218例中56例显示了滑肌的存在。