How Big is that Pneumothorax?

Can you easily calculate the size of a pneumothorax? Does the size matter? Calculating the size has been difficult, as it requires formulas we don’t necessarily carry around in our heads; like the figure on the left. In most cases we approximate and say it’s about such and such a percent. I know in many…

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The Deep Sulcus Sign and more.

Have you ever had a chest X-ray in someone that might have a pneumothorax, but you couldn’t see it? I know I have. Today I wanted to mention three signs that might help: The first is the Deep Sulcus Sign. This is the more widely known. The other two signs are the Etched Diaphragm and…

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