嗜铬细胞瘤的CT诊断及评价

目的 评估ＣＴ对嗜铬细胞瘤的诊断价值。方法 分析４３例（良性４０例，恶性３例）经病理证实的嗜铬细胞瘤ＣＴ征象并与Ｂ超结果对照。结果 肾上腺区肿瘤３４例，异位瘤９例（２１％）。ＣＴ表现：８１％（３５／４３）肿块直径大于３ｃｍ。肿瘤实质均显著强化，３２例（７４．４％）密度不均匀，常伴有坏死、液化、囊变或钙化。良笥病变边界清晰，恶性病变易侵犯邻近组织。ＣＴ定位率为９３．３％、定性率为８８．４％均高于Ｂ超（Ｐ〈０．０５）。结论 ＣＴ对嗜铬细胞瘤的定位、定性诊断具有较高价值，是主要的影像检查方法。

CT diagnosis and evaluation of pheochromocytoma

Objective To evaluate CT diagnosis in pheochromocytoma. Methods The CTmanifestations of 43 cases (benign 40, malignant 3) proved pathologically were analyzed retrospectively, and compared with their B mode ultrasound results. Results 43 pheochromocytomas included 34 adrenal masses and 9 ectopic masses (21%). The CT appearances were: The diameter of masses in 81% (35/43) cases was larger than 3cm, all masses were markedly enhanced after bolus injection of contrast media. 32/43(74. 4% ) of cases were revealed heterogeneous, commonly showing necrosis, liquefaction, cystis or calciri cation. Benign lesions showed distinct margin, Malignant lesions ususally invased into the nearby structures, The accuracy rate of CT diagnosis in localization and qualitation was 93. 3% and 88. 4% respectively, and it was higher than that of sonography (P <0. 05). Conclusion CT has important value and is more effective imaging modality in local - ization and determination of pheochromocytoma.