Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum 695 011, India.
Neurol India. 2010 May-Jun;58(3):468-70. doi: 10.4103/0028-3886.66335.
Craniopharyngiomas can present as suprasellar cystic lesion with varied imaging appearance. In magnetic resonance imaging using T1-weighted sequence, the cyst can show hypointense, isointense or hyper intense signals depending on the cyst content. We report a case where the T1 signal intensity of a craniopharyngioma changed over time. The hypointense lesion had become hyper intense in the follow-up scan after six months. Such change in signal intensity is described with Rathke's cleft cyst but has not been reported with craniopharyngioma. The possible reason for this change in signal intensity is discussed.
颅咽管瘤可表现为鞍上囊性病变，具有不同的影像学表现。在 T1 加权序列的磁共振成像中，根据囊内容物的不同，囊肿可显示低信号、等信号或高信号。我们报告了一例颅咽管瘤的 T1 信号强度随时间变化的病例。在 6 个月后的随访扫描中，低信号病变变为高信号。这种信号强度的变化在 Rathke 裂隙囊肿中有描述，但在颅咽管瘤中尚未报道。讨论了这种信号强度变化的可能原因。
