孤立性肺結(jié)節(jié)：良性與惡性對(duì)比-wenkub
2023-01-27 12:15:43 本頁面
【正文】 masn 這些形式的鈣化最常見于錯(cuò)構(gòu)瘤、肉芽腫性病變n The exception to the rule above is when patients are known to have a primary tumor.For instance the diffuse calcification pattern can be seen in patients with osteosara or chondrosara.Similarly the central and popcorn pattern can be seen in patients with GItumors and patients who previously had chemotherapy.n 一些病人有原發(fā)腫瘤病史，可以表現(xiàn)為良性鈣化n 例如骨肉瘤、軟骨肉瘤可以表現(xiàn)彌漫性鈣化。如果超過 2年以上保持不變，這個(gè)結(jié)節(jié)就是良性結(jié)節(jié)Shape 形態(tài)n Japanese screening studies showed that a polygonal shape and a threedimensional ratio was a sign of benignity (2,3).日本的一項(xiàng)研究表明，多變形和三維立體比率大于 n A polygonal shape means that the lesion has multiple facets (multisided).多邊形意味這個(gè)病灶具有多個(gè)面 A peripheral subpleural location was also a sign of benignity in this study n 在這項(xiàng)研究中，周圍的胸膜下的病變也是良性結(jié)節(jié)的一個(gè)標(biāo)志n The threedimensional ratio is measured by obtaining the maximal transverse dimension and dividing it by the maximal vertical dimension.A large threedimensional ratio indicates that the lesion is relatively flat, which is a benign sign.Margin 邊緣n Corona radiata sign highly associated with malignancy (figure) 放射冠征n Lobulated or scalloped margins intermediate probability 分葉征和鋸齒征n Smooth margins more likely benign unless metastatic in origin n 邊緣光滑見于良性結(jié)節(jié)，除外轉(zhuǎn)移瘤Air Bronchogram sign空氣支氣管征n Recent studies have showed that an air bronchogram is more monly seen in malignant pulmonary nodules.It is most monly seen in BAC (bronchoalveolar cell carcinoma) and adenocarcinoma.n 最近一項(xiàng)研
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