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为丰富CT和MRI对Rathke囊肿的认识 ,便于诊断 ,对经手术病理证实的 6例患者与CT和MRI检查对照分析。结果显示 ,术前CT、MRI误诊为颅咽管瘤、垂体瘤、胆脂瘤等。CT显示圆形及不规则形囊性低密度区 4例 ,圆形等密度和稍高密度区各 1例 ,强化后 2例囊壁线状增强。MRI显示圆形及类圆形T1WI像低信号 3例 ,等信号 1例 ;T2 WI像均为高信号 ,边缘清楚。提示MRI对本病的诊断价值优于CT。
In order to enrich the knowledge of Rathke cysts on CT and MRI for ease of diagnosis, 6 cases of patients confirmed by pathology were compared with CT and MRI examinations. The results showed that preoperative CT and MRI were misdiagnosed as craniopharyngioma, pituitary tumor, and cholesteatoma. CT showed round and irregular cystic low-density areas in 4 cases, round iso-density and slightly high-density areas in 1 case, and enhancement in 2 cases with linear enhancement of the capsule walls. MRI showed three cases of low signal in round and round T1WI images, and one case of equal signal; T2WI images were high signal with clear edges. It is suggested that the diagnostic value of MRI for this disease is better than CT.