Document Detail

Marked hyperprolactinemia caused by carotid aneurysm.
MedLine Citation:
PMID:  9043751     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Pituitary dysfunction caused by intracranial aneurysms is rare. We report a patient with the unique feature of hyperprolactinemia to a degree previously seen only with prolactin-secreting tumours. METHOD: Case report. RESULT: A 42-year-old woman had a galactorrhea, left-sided headache, reduced vision in the left eye and a left temporal hemianopsia. Serum prolactin was elevated (365 micrograms/L). Cranial computed tomography (CT) revealed a suprasellar mass, which carotid angiography showed to be a left internal carotid artery aneurysm. At craniotomy, this aneurysm and a smaller one of the ophthalmic artery were repaired, and the patient's vision returned to normal. The prolactin level fell to normal. Follow-up CT showed no evidence of pituitary adenoma or hypothalamic lesion. CONCLUSIONS: Carotid aneurysm can cause reversible pituitary dysfunction. A prolactin level > 300 micrograms/L is not a reliable cut-off for distinguishing prolactin-secreting adenomas from other causes of elevated prolactin. A co-existing prolactinoma was felt to be ruled out by both a normal CT scan and normal prolactin levels following aneurysm repair. Patients with marked hyperprolactinemia should be considered for angiography or MRI to rule out carotid aneurysm, since the consequences of pituitary exploration in this setting are potentially grave.
S R Kahn; R Leblanc; A F Sadikot; I G Fantus
Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques     Volume:  24     ISSN:  0317-1671     ISO Abbreviation:  Can J Neurol Sci     Publication Date:  1997 Feb 
Date Detail:
Created Date:  1997-05-14     Completed Date:  1997-05-14     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0415227     Medline TA:  Can J Neurol Sci     Country:  CANADA    
Other Details:
Languages:  eng     Pagination:  64-6     Citation Subset:  IM    
Department of Medicine, Royal Victoria Hospital, Canada.
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MeSH Terms
Carotid Artery Diseases / complications*,  radiography,  surgery
Cerebral Angiography
Hyperprolactinemia / etiology*,  surgery
Intracranial Aneurysm / complications*,  radiography,  surgery
Magnetic Resonance Imaging
Prolactin / blood
Tomography, X-Ray Computed
Reg. No./Substance:

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