Vertebrobasilar dolichoectasia

Case contributed by Iman Saadallah Mohammad
Diagnosis almost certain


Right eye diplopia for 2 years.

Patient Data

Age: 60 years
Gender: Male

The left vertebral and basilar arteries are dilated by 5mm and 7mm, respectively. 

Basilar artery has tortuous course, causing a pressure effect on the right 3rd cranial nerve medial to the right temporal lobe.

Case Discussion

Basilar artery normally is measuring less than 4.5 mm.

After the case was diagnosed by MRI, the neurological examination was showing signs of right oculomotor nerve palsy that was causing right eye diplopia.

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