unscreened lumps

例句：

1. 1. The doctor found an unscreened lump in the patient's breast.
   医生在病人的乳房里发现了一个未筛选的肿块。
2. 2. The pathologist examined the unscreened lump and determined it was malignant.
   病理学家检查了那个未筛选的肿块，并确定它是恶性的。
3. 3. The patient underwent surgery to remove the unscreened lump, which turned out to be benign.
   患者接受了手术来切除那个未筛选的肿块，结果发现它实际上是良性的。