AIR, AND, ATELECTASIS, BLACK, BRONCHIAL, BRONCHIOLES, CANCER, CANCEROUS, CARCINOMA, CHEST, COUGHING, DISTAL, EDUCATION, HEALTHCARE, LUNG, MALIGNANT, MEDICAL, MEDICINE, MONOCHROME, NO-ONE, NOBODY, OBSTRUCTION, OBSTRUCTIVE, PASSAGE, PEOPLE, PULMONARY, RADIOGRAPHY, RADIOLOGIST, RAJAAISYA, SIGN, TORSO, WHITE, X-RAY, XRAY,