Recurrent isolated abducens nerve paresis associated with persistent trigeminal artery variant.
We report a 74-year-old woman who presented with recurrent isolated abducens nerve paresis. Cranial magnetic resonance imaging revealed that the right abducens nerve was sandwiched between the right internal carotid artery and a persistent trigeminal artery (PTA) variant, which might have led to neurovascular compression of the abducens nerve, resulting in abducens nerve damage. Normal variants of PTA, which are cerebellar arteries originating from a precavernous portion of the internal carotid artery, must be carefully observed as such variants can potentially cause a neurovascular compression of the abducens nerve.
Department of Neurology, Institute of Clinical Medicine, University of Tsukuba, Japan. Nakamagoek@md.tsukuba.ac.jp
Kiyotaka
K
Nakamagoe
Naomi
N
Mamada
Masanari
M
Shiigai
Kotone
K
Shimizu
Tadachika
T
Koganezawa
Akira
A
Tamaoka
D020434:Abducens Nerve Diseases / Q000209:etiology* / Q000503:physiopathology; D000368:Aged; D004172:Diplopia / Q000209:etiology; D004584:Electronystagmography; D005133:Eye Movements; D058447:Eye Pain / Q000209:etiology; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography; D009408:Nerve Compression Syndromes / Q000150:complications* / Q000503:physiopathology; D010291:Paresis / Q000209:etiology* / Q000503:physiopathology; D012008:Recurrence; D014276:Trigeminal Nerve