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Case Reports in Medicine
Volume 2015 (2015), Article ID 536191, 3 pages
Case Report

Pituitary Insufficiency and Hyperprolactinemia Associated with Giant Intra- and Suprasellar Carotid Artery Aneurysm

1Atatürk University Faculty of Medicine, Internal Medicine, Endocrinology and Metabolism Department, 25240 Erzurum, Turkey
2Atatürk University Faculty of Medicine, Internal Medicine, 25240 Erzurum, Turkey
3Erzincan University Faculty of Medicine, Internal Medicine, Endocrinology and Metabolism Department, 24000 Erzincan, Turkey
4Atatürk University Faculty of Medicine, Radiology Department, 25240 Erzurum, Turkey

Received 20 December 2014; Revised 6 June 2015; Accepted 16 June 2015

Academic Editor: Christian Koch

Copyright © 2015 A. Gungor et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Pituitary insufficiency secondary to internal carotid artery (ICA) aneurysm is a very rare condition. Its prevalence is reported as 0.17% (Heshmati et al., 2001). We present a case of pituitary insufficiency and hyperprolactinemia secondary to suprasellar giant intracranial aneurysm. A 71-year-old man was admitted to our clinic with symptoms of hypopituitarism, hyperprolactinemia, and visual field defect. His pituitary MRI and cerebral angiography revealed a giant saccular aneurysm filling suprasellar cistern arising from the ophthalmic segment of the right ICA. Endovascular treatment was performed on the patient to decrease the mass effect of aneurysm and improve the hypophysis dysfunction. After treatment, his one-year follow-up showed the persistence of hypophysis insufficiency, decrease of prolactin (PRL) level, and normal visual field. An intracranial aneurysm can mimic the appearance and behavior of a pituitary adenoma. Intracranial aneurysms should be taken into consideration in the situation of hypopituitarism and hyperprolactinemia. It is important to distinguish them because their treatment approach is different from the others.