Atelectasis: A Greek Word that Might Lead to a Collapsed Lung Key Takeaways: When a lung is able to vet little to no air, it might lead to a collapsed lung. This problem is termed as Atelectasis. An acute lung disorder, Atelectasis is a condition wherein you might end up with a collapsed lung. This is derived from Greek words which mean incomplete expansion. This means that the lung which is on the verge of collapsing will vet little or no air and it may affect a part or the whole lung. Pulmonary Atelectasis is more commonly found one. This disorder can be brought and diagnosed with a chest radiogram. What Causes Atelectasis? This condition is brought about by the collapsing of a lung, or outside pressure on the lung which tends to obstruct it from expansion and thus letting the smaller amount of air entering the lung. There is another type of condition called the Pneumothorax, where the air escapes from the lungs, thus filling the cavity between the lung and the chest wall. However, this is a common condition found in the patients after surgery.