Chest Radiology > Pathology > Atelectasis > General. Atelectasis is collapse or incomplete expansion of the lung or part of the lung. This is one of the most common findings on a chest x-ray. It is most often caused by an endobronchial lesion, such as mucus plug or tumor.
A Labradoodle, a crossbreed between a poodle and a retriever. A crossbreed or crossbred usually refers to an organism with purebred parents of two different breeds, varieties, or populations.
cross-train. v. cross-trained, cross-trainÂ·ing, cross-trains. v. intr. 1. To undergo or provide training in different tasks or skills: The department has cross-trained in firefighting and emergency medical services. 2. To train in different sports, mainly by alternating regimens, as in running, bicycling, and swimming. v. tr. To train (another) in different tasks or skills.