Dear Doctor, I went for medical checkup. In the report they mention, The heart, mediastinum and pulmonary hila are unremarkable. The lungs are clear. There is no pleural effusion. The bony thorax is unremarkable. So I need your assistance that what is meaning for the heart, mediastinum and pulmonary hila are remarkable? Rest of others I understood with help of Wikipedia. Thanks and Regards, Balan.