题目内容

患者,女性,42岁,1999年体检发现左甲状腺肿块,甲状腺核素显像为冷结节,CT检查示甲状腺内有多个占位病变,血Tg 88μg/L,作左甲状腺全切除术及颈淋巴清扫术,术后病理示甲状腺滤泡状腺癌。2002年2月开始咳嗽,痰中带血丝,X线胸片示甲状腺癌肺转移,131I全身显像提示双肺转移。 患者应该作甲状腺全切除手术的理由有

A. 多数患者的病理表现是多发性病灶
B. 肿瘤直径>1cm的患者,对侧有肿瘤的可能性为40%
C. 切除了甲状腺组织,有利于肿瘤组织摄取131I,从而有利于肿瘤组织转移灶的核素显像
D. 去除了剩余组织分泌Tg的可能性,测定Tg可帮助发现肿瘤的转移
E. 以上都对

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