Fig. 1From: Crossed brainstem syndrome revealing bleeding brainstem cavernous malformation: an illustrative caseClinical examination reveals (a) an abducens nerve palsy and (b) a peripheral facial nerve palsy on the left side, associated with (c,d) a contralateral face-sparing hemiparesis. This crossed brainstem syndrome involves the inferior medial pons and was originally described by Achille Louis Foville in 1859Back to article page