Radiology A patient of A with injury over chest and limbs has low sp 02. M mode US of right upper pa of chest shows stratosphere sign. What is the diagnosis? A Haemothotax B Pneumothorax C Cardiac tamponade D Pulmonary embolism 💡 Explanation A patient of A with injury over chest and limbs has low sp 02. M mode US of right upper pa of chest shows stratosphere sign. What is the diagnosis? ✓ Correct Answer: B. Pneumothorax