【摘要】 目的 :探讨二维及彩色多普勒超声对甲状腺恶性肿瘤的诊断价值。方法 :对 6 8例经病理证实的甲状腺恶性肿瘤进行二维及彩色多普勒超声检查。结果 :5 7例 (84% )病变为低回声 ,5 3例 (78% )结节性病变边界不整或欠规整 ,48例 (71% )病变内部结构较周围甲状腺实质致密 ,33例 (49% )病变内见点状强回声。 10例结甲伴微小癌变的超声表现缺乏上述特征。彩色多普勒显示 6 8例 (10 0 % )病变内均见动脉血流 ,其中 RI>0 .7者 49例(72 % ) ,RI<0 .6者仅 3例。结论 :多数甲状腺恶性肿瘤的超声表现具有特征性 ,有助于超声明确诊断 ,也为筛选可疑病变进行超声引导下穿刺活检提供了依据。但超声在判断良性病变有无微小癌变方面有局限性更多还原

【Abstract】 Objective:To detect malignant thyroid tumor with high resolution ultrasound and color Doppler. Methods:Sixty eight patients were examined by the fore mentioned technics. Histo pathology offered the final confirmation. Results:Fifty seven tumors(84%) showed hypoechogenicity,48(71%) even more compact, 53 tumors(78%) were nodular and irregular, 33 tumors(49%) were microcalcified The nodular goiters with minimal malignancy devoid the above signs Color Doppler showed arterial blood flow in all the tumors. 49 tumors(72%) showed RI higher than 0 7.Conclusion:.The sonographic signs of most malignant thyroid tumors hold characteristics favourable in diagnosis,but it is difficult for ultrasound to determine minimal malignant within a rather large benign tumor更多还原