A patient presented with a history of blunt trauma to the chest and abdomen. On USG examination in M mode the following finding is seen. What could be the likely diagnosis?: (A) Pleural effusion, (B) Bronchial obstruction, (C) Lung abscess, (D) Pneumothorax
Answer is D. Pneumothoraxis a serious potential consequence of blunt thoracic trauma and, if misdiagnosed, it may quickly become life-threatening. On M mode of USG, classical signs for the gray scale imaging are seen: seashore sign: normal lung sliding barcode/stratosphere sign: pneumothorax