Hi, Thank you for posting your query in healthcaremagic.com This is Dr. Swarnava dattagupta answering your query. I understand your concern. see, prominent vascular lung markings are seen in case of infections or inflammation in lung. pulmonary edema can be another cause. also, there is prominence of left ventricle. so there is little cardiac enlargement. these two features can be associated. if these features are associated with symptoms, you should see a physician or a cardiologist. not much to worry as of now but get a proper examination done. Hope i have answered your question. If you have any further questions i will be happy to help. Regards