Parkinson syndrome: a precise localization for abducens palsy.
BACKGROUND
Unilateral isolated abducens palsy can occur due to any lesion from pons to orbit. The precise localization is made through the associated neurological signs. Parkinson syndrome is a symptom complex of unilateral abducens palsy with ipsilateral postganglionic Horner syndrome localizing the lesion to posterior cavernous sinus.


RESULTS
We describe here a 55 year old lady who presented with headache and diplopia for 3 months. On examination she had right lateral rectus palsy and postganglionic Horner syndrome. No other neurological deficit was present. MRI brain and MRA of intracranial vessels showed aneurysm of the right cavernous internal carotid artery which was confirmed on cerebral angiography. Endovascular coiling was advised but refused by the patient and she was treated symptomatically


CONCLUSIONS
Parkinson syndrome gives precise localization to unilateral abducens palsy and hence is a valuable clinical pearl.
Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India. Electronic address: vishnuvy16@yahoo.com.
Venugopalan Y
VY
Vishnu
Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India. Electronic address: gayathri_petluri@yahoo.com.
Gayathri
G
Petluri
Department of Radiology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India. Electronic address: drvivekgupta.pgi@gmail.com.
Vivek
V
Gupta
Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India. Electronic address: vivekl44@yahoo.com.
Vivek
V
Lal
Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India. Electronic address: dherajk@yahoo.com.
Dheeraj
D
Khurana
Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India. Electronic address: goyal_mk@yahoo.com.
Manoj Kumar
MK
Goyal
D020434:Abducens Nerve Diseases / Q000150:complications* / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008875:Middle Aged; D020734:Parkinsonian Disorders / Q000150:complications* / Q000175:diagnosis*
Abducens palsy; Carotid aneurysm; Cavernous sinus; Horner syndrome; Parkinson syndrome; Ptosis