Kidooka M, Okada T, Nakajima M, Handa J
Division of Neurosurgery, Dai-ni Okamoto Hospital, Kyoto.
Neurol Med Chir (Tokyo). 1995 Feb;35(2):96-9. doi: 10.2176/nmc.35.96.
A 25-year-old female presented with amenorrhea and bitemporal hemianopsia without diabetes insipidus due to an intra- and suprasellar dumbbell tumor. The preoperative and operative diagnosis was pituitary adenoma, but the histological diagnosis was germinoma. Differential diagnosis between germinoma and pituitary adenoma based on computed tomograms and magnetic resonance (MR) imaging features and signal intensity characteristics was difficult in this patient. An enhanced mass posterior to the normal pituitary gland on the mid-sagittal MR image normally indicates an intrasellar germinoma rather than a pituitary adenoma, but this finding was equivocal in our patient.
一名25岁女性因鞍内和鞍上哑铃形肿瘤出现闭经和双颞侧偏盲，无尿崩症。术前及手术诊断为垂体腺瘤，但组织学诊断为生殖细胞瘤。基于计算机断层扫描、磁共振（MR）成像特征及信号强度特点，对该患者进行生殖细胞瘤与垂体腺瘤的鉴别诊断较为困难。矢状位正中MR图像上正常垂体后方强化肿块通常提示鞍内生殖细胞瘤而非垂体腺瘤，但在我们的患者中这一表现并不明确。
