<s>[INST] Hi, i am 39 years old and weigh 237 pounds. I went to the emergency room for abdominal pain and had a cat scan done. they told me my scan was perfect,but they notic i had a couple of white dots showing in one of my lungs... Can somebody please tell me what this could be. [/INST] Thanks for your question on Chat Doctor. I can understand your concern. White spots on lungs on CAT scan are commonly seen with 1. Benign cyst 2. Fresh infection like pneumonia, tuberculosis 3. Lung abscess 4. Lung cancer5. Old fibrotic, healed lesions. So better to consult pulmonologist and get done 1. Bronchoscopy and BAD (bronchoalveolar lavage) analysis for the diagnosis of infection. 2. Biopsy from the nodule for the diagnosis of cancer. So consult pulmonologist and discuss all these. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>