Masui T, Takahashi M, Sugimura H, Isoda H, Mochizuki T, Kaneko M, Nishizawa S
Department of Radiology, Hamamatsu University School of Medicine, Japan.
Radiat Med. 1996 Jul-Aug;14(4):189-91.
We report a case of a pituitary prolactinoma mimicking a sphenoid sinus or clival tumor. On magnetic resonance (MR) images, a soft tissue mass located inferior to the apparently normal pituitary gland, and occupied the posterior third of the sphenoid sinus and eroded the upper portion of the clivus. It had iso- to low intensity on the T1-weighted image, and slightly high intensity on the T2-weighted image. Careful observation revealed that the floor of the sella turcica was not identified and there was sulcus formation between the tumor and clivus, probably suggesting extraclival tumor, pituitary tumor. Transsphenoidal tumor resection and histopathological study revealed that it was a prolactinoma.
我们报告一例垂体泌乳素瘤，其表现类似蝶窦或斜坡肿瘤。在磁共振（MR）图像上，一个软组织肿块位于看似正常的垂体下方，占据蝶窦后三分之一并侵蚀斜坡上部。在T1加权图像上呈等至低信号，在T2加权图像上呈略高信号。仔细观察发现蝶鞍底部未显示，肿瘤与斜坡之间有沟形成，可能提示斜坡外肿瘤，即垂体肿瘤。经蝶窦肿瘤切除术及组织病理学研究显示为泌乳素瘤。
