For ages, they have been willing to throw down over the merits of serif versus sans-serif typefaces.
Quick Answer. Liver nodules, usually a sign of liver disease, can be caused by certain parasitic or viral infections, immune system abnormalities, cancer and genetic conditions, according to Mayo Clinic. Contributing factors include heavy alcohol or drug use, unprotected sex, obesity, diabetes and exposure to certain chemicals.
Answer: A solitary spot on a chest X-ray â generally referred to as a lung nodule â sometimes can be an early cancer, so it's important to talk to your doctor to determine the best course of action.Lung nodules are common and typically noncancerous (benign).ests may include the following: 1  CT scan of the chest if the nodule was first seen on a chest X-ray; 2  Positron emission tomography (PET) scan to see how active the nodule cells are â high cellular activity is an indicator of cancer or active inflammation; and/or. 3  Tissue sample (biopsy the nodule).