Spontaneous return of function after surgical excision of the seventh cranial nerve in parotid tumor surgery.

Spontaneous return of function after surgical excision of the seventh cranial nerve in surgery of parotid tumors is not impossible. This seems to occur through the several existing neural pathways between the fifth and seventh cranial nerves. It is probable that voluntary motor impulses by reeducation find their way from the cortex through the fifth cranial nerve to the respective muscles.