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本文用X线——病理对照方法对直径小于3厘米的小瘤体和直径大干3厘米的大瘤体肺癌进行了对比观察。小瘤体多为孤立球形病灶,少数为局部播散病灶。前者在X线上表现为孤立球形阴影,后者表现为局部浸润阴影。大瘤体均为孤立病灶。小瘤的X线特征为:1)瘤体内疤痕较多,有时有残留肺组织故密度较低,疤痕牵拉胸膜时,可出现胸膜凹陷征。2)分叶征在小瘤体虽不如大瘤体常见,但对早期诊断更有意义。
In this article, X-ray-pathological control method was used to compare the small tumor with a diameter of less than 3 cm and the large tumor with a diameter of 3 cm. The small tumors are mostly isolated spherical lesions, and a few are local disseminated lesions. The former appears as an isolated spherical shadow on the X-ray, and the latter appears as a partially infiltrated shadow. Large tumors are isolated lesions. The X-ray features of the nodules are: 1) There are many scars in the tumor, and sometimes there is residual lung tissue, so the density is low. When the scar pulls the pleura, the pleural depression sign may appear. 2) The lobulated sign is less common in small tumors than in large tumors, but it is more meaningful for early diagnosis.