【摘要】 目的　通过总结 12 4例鞍内病变的MR表现 ,探讨鞍内病变的MR诊断和鉴别诊断。方法　 12 4例鞍内病变 ,均行MR平扫检查 ,84例行增强扫描。 93例经手术病理证实 ,3 1例经临床证实。结果　垂体微腺瘤 46例 ,垂体巨腺瘤 3 2例 ,Rathke囊肿 10例 ,转移瘤 4例 ,垂体脓肿 3例 ,空泡蝶鞍 2 1例 ,淋巴样垂体腺炎 2例 ,垂体腺良性增生 2例 ,蛛网膜囊肿 2例 ,特发性垂体功能低下2例。垂体腺瘤、转移瘤、淋巴样垂体腺炎、垂体腺良性增生和垂体脓肿表现为垂体腺增大 ,增强扫描和临床资料对鉴别诊断非常重要。可根据信号变化区别Rathke囊肿和蛛网膜囊肿。空泡蝶鞍的诊断要点是漏斗无移位。特发性垂体功能低下表现为垂体腺小和漏斗消失。结论　鞍内病变的MR主要表现包括垂体腺增大、鞍内囊性病变和垂体腺发育异常 ,鉴别诊断需结合信号变化、增强表现和临床资料 ,综合分析更多还原

【Abstract】 Objective To investigate MR diagnosis and differential diagnosis of intrasellar diseases by studying MR manifestations of intrasellar diseases in 124 cases.Methods 124 cases of intrasellar diseases were underwent by MR plan scan, among which 84 cases were examined by MR contrastenhanced scan. 93 cases were proved by operation and pathology, 31 cases were proved by clinical data.Results There were 46 cases of pituitary microadenoma, 32 cases of pituitary macroadenoma, 10 cases of Rathke’ cleft cyst, 4 cases of metastasis, 3 cases of pituitary abscess, 21 cases of empty sella, 2 cases of lympha hypophysitis, 2 cases of pituitary hyperplasia, 2 cases of arachnoid cyst, 2 cases of idiopathic pituitary hypofunction. Pituitary adenoma,metastasis,lympha hypophysitis,pituitary hyperplasia and pituitary abscess show pituitary enlargement, contrastenhanced scan and clinical material were very important in differential diagnosis. Rathke’ cleft cyst and arachnoid cyst could be distinguished according to the change of signal. The diagnostic essential of empty sella was that the infundibulum remained immovable. Idiopathic pituitary hypofunction manifested pituitary shrinking in size and disappearing of infundibulum.Conclusion The main MR manifestations of intrasellar diseases were pituitary enlargement,intrasellar cystic diseases and pituitary dysplasia. We should analyze synthetically in combination with signal change,enhanced manifestations and clinical data in differential diagnosis.更多还原