Abstract
Multiple pituitary adenomas are rare. We present a quite unique case of double pituitary adenomas associated with persistent trigeminal artery (PTA) treated by endoscopic surgery. To the best of our knowledge, this is the first report in the literature. A 64-year-old woman was referred to our hospital for suspicion of acromegaly. Preoperative magnetic resonance imaging revealed two separate intrasellar masses with intrasellar vascular structure. Right cerebral angiography showed medial-type PTA. The patient underwent endoscopic transsphenoidal surgery and both tumors were resected completely. Postoperative immunohistopathologic examination revealed two histologic types of adenoma: the first tumor was positive for growth hormone (GH), while the second was considered nonfunctioning. Postoperatively, the patient's serum levels of GH and insulin-like growth factor-1 returned to normal. We observed an extremely rare case of double pituitary adenomas associated with PTA. Preoperative neuroimaging and modern endoscopic surgery are valuable to confirm diagnosis of double pituitary adenomas and identify anatomical localization of PTA.
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