Ganglioneuroma of the External Auditory Canal and Middle Ear

Figure 5

Hematoxylin and eosin stain (H&E stain). (a) Ear canal ganglioneuroma (10x). Showing (arrow) surface squamous epithelium of the external auditory canal and the ganglioneuroma beneath the surface. (b) High power (40x) showing ganglion cells (blue arrow) without rim of satellite cells among Schwannian stroma (black arrow). (c) (10x) Epitympanum showing ganglion cells (arrow).

(a)

(b)

(c)