摘要
本文讨论12例乳腺癌CT表现。直接征象即肿块阴影,一般为圆形,卵圆形。肿块等于或高于腺体密度,边缘一般呈毛刺状参差不齐,有细小钙化。增强扫描CT值成倍增加为其特征性。间接征象有血管增粗增多,出现宽窄不一透亮带,皮肤增厚、收缩。乳后间隙消失,乳头内陷,腋下可见肿大淋巴结等。乳腺CT扫描适应症主要有乳腺钼靶照片的隐区部位,乳腺钼靶X线片上怀疑乳腺癌者,以及对致密型,青春期,哺乳期乳腺和乳腺癌根治术前了解肿块与周围组织关系等方面有一定意义。乳腺CT扫描也有局限性,它不适合于普查形式,对乳腺癌砂粒样钙化的特征性表现不如X线钼靶,对致密型乳腺中小于10mm的结节亦很难显示。
CT manifestations of breast cnncer in 12 patisnts were described. A round or oval mass was noted in 11 cases, usually with shaggy border. Their attenuation grade was similar to or denser than that of the normal mammary glands and markedly increased after intravenous contrast medium enhancement. The indirect signs seen on CT scan included blood vessels dilatation with increase in number, an irregular translucent halo, thickening of overlying skin, obliteration of retromammary radiolucency space, retraction of the nipple and axillary lymphoadenopathy. The indications for CT examination include: (1) tumor arising in hidden area, (2) tumor suspected on plain mammogram, (3) identification of lesion in compact breast. However, CT is not advisable for mass screening because of the high cost, and on top of which, there is great likelihood of missing small lesion less than 1.0cm in diameter and microcalcif ication as well.
出处
《中国肿瘤临床》
CAS
CSCD
北大核心
1991年第4期198-200,F002,共4页
Chinese Journal of Clinical Oncology
关键词
乳腺癌
CT
CT
Breast Cancer
Contrast medium
Enchancement
