@article{oai:sapmed.repo.nii.ac.jp:00008125,
 author = {福井, 崇人 and 伊東, 民雄 and 安斉, 公雄 and 中村, 博彦},
 issue = {1},
 journal = {北海道脳神経疾患研究所医誌 = Journal of Hokkaido Brain Research Foundation},
 month = {Mar},
 note = {Ectopic pituitary adenomas are rare and have been described most frequently occurring in the suprasellar region and sphenoid sinus. We present a very rare case of ectopic pituitary adenoma occurring in the clivus. A 54-year-old woman was referred to our hospital complaining of headache. She had no endocrinological abnormalities. Magnetic resonance (MR) imaging showed a clival tumor appearing as isointense on T1-weighted image and slightly hypointense compared with normal brain on T2-weighted image. No connection between the normal pituitary gland was observed. Pre-operative diagnosis was chordoma. By a transsphenoidal approach assisted with neuro-endoscopy, we performed a partial removal of the tumor. No connection between the normal pituitary gland and the tumor was found. Histopathorogical analysis showed a pituitary adenoma. As demonstrated by our case report, differential diagnosis of a clival tumor must include consideration of an ectopic pituitary adenoma.},
 pages = {31--34},
 title = {斜台部に発生した異所性下垂体腺腫の1例},
 volume = {15},
 year = {2005}
}