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目的：探索鞍区肿瘤的脑电图（ Ｅ Ｅ Ｇ）特征。方法：２２４ 例经手术和（或）病理、 Ｃ Ｔ、 Ｍ Ｒ Ｉ证实的鞍区肿瘤分成３ 组：（１）垂体腺瘤组１５３ 例；（２）颅咽管瘤组４６ 例；（３）鞍区其他肿瘤组２５ 例。所有患者均按常规方法在手术前２～３０ ｄ 内记录 Ｅ Ｅ Ｇ。结果：过半数的患者（５７．６％ ）呈现正常或轻度异常 Ｅ Ｅ Ｇ，其余患者（４２．４％ ）表现 Ｅ Ｅ Ｇ 异常，其中弥漫性异常２９．０％ ，阵发性异常８．５％ ，局灶性异常４．９％ 。此外，有２４ 例（１０．７％ ）出现间歇性节律性δ活动（ Ｉ Ｒ Ｄ Ａ），７７ 例（３４．４％ ）有生理波抑制现象。 Ｉ Ｒ Ｄ Ａ及生理波抑制在颅咽管瘤组中的出现率明显高于其他两组。直径＞ ２０ ｍ ｍ 的鞍区肿瘤 Ｅ Ｅ Ｇ 异常率高。结论：鞍区肿瘤的 Ｅ Ｅ Ｇ以无特征性改变占主导地位，其 Ｅ Ｅ Ｇ 异常的主要表现形式是弥漫性及阵发性异常，少有局灶性异常出现。肿瘤体积与异常程度呈正相关。 Ｅ Ｅ Ｇ 对鞍区肿瘤的定性诊断有一定帮助。
Objective: To explore the EEG features of sellar tumors. METHODS: Totally 224 sellar tumors confirmed by surgery and / or pathology, C T and M R I were divided into three groups: (1) 153 cases of pituitary adenoma; (2) 46 cases of craniopharyngioma group; (3) ) Other tumors in the sellar area 25 cases. All patients according to conventional methods in the preoperative 2 ~ 30 d record E E G. Results: Most of the patients (57.6%) had normal or mild abnormal E E G, while the rest (42.4%) showed abnormal E E G, of which diffuse abnormality was 29.0% and paroxysmal abnormality was 8 .5%, focal abnormal 4.9%. In addition, intermittent rhythmic δ activity (I R D A) occurred in 24 patients (10.7%) and physiological wave suppression in 77 patients (34.4%). I R D A and physiological wave suppression in the craniopharyngioma group was significantly higher than the other two groups. There was a high rate of E E G abnormalities in the sellar region of> 20 mm in diameter. CONCLUSIONS: E E G in the sellar region is dominated by non-characteristic changes. The main manifestations of E E G abnormalities are diffuse and paroxysmal abnormalities with few focal abnormalities. Tumor volume was positively correlated with the degree of abnormality. E E G is helpful for the qualitative diagnosis of tumors in the sellar region.