title: [Intrasellar carotid aneurysm simulating prolactin adenoma].
abstract: A 52-year-old woman with secondary amenorrhea presented with ophthalmoplegia, subarachnoidal bleeding. Pituitary function tests showed mild hyperprolactinemia and deficiencies of other functions of adenohypophysis. X-ray films of the skull showed enlarged sella turcica, and CT scan was interpreted as demonstrating pituitary tumour. Carotid arteriography led to diagnosis of intrasellar aneurysm of the right internal carotid, without any pituitary tumour. After embolisation of the aneurysm, followed, by a temporo-sylvian anastomosis, endocrine functions did not improve. The mechanism of hyperprolactinemia is discussed, probably due to pituitary ischemia. This case provides evidence of interest of further investigations before a transsphenoidal surgery in pituitary tumours, in particular if subarachnoidal bleeding occurs.
mesh_terms: D000236:Adenoma / Q000175:diagnosis* / Q000378:metabolism; D002340:Carotid Artery Diseases / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis*; D008875:Middle Aged; D010911:Pituitary Neoplasms / Q000175:diagnosis* / Q000378:metabolism; D011388:Prolactin / Q000378:metabolism*; D012658:Sella Turcica
chemical_list: D011388:Prolactin
vernacular_title: Anévrysme de la carotide intrasellaire simulant un adénome à prolactine.