Objective to explore relations between arteries, anastomotic branches and cranial nerves root entry zones on ventrolateral medulla oblongata.

Objective to summarize the 48 reports of the patients with auditory and cranial nerve root compression and research the causes of the disease.

In E10.5 mutant embryos that were stained with neurofilament, the cranial nerves and dorsal root ganglia were morphologically normal.