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.
While the term, Friesian Sport horse, is used generically to refer to any Friesian crossbreed, the ideal Friesian Sporthorse is specifically bred to excel in disciplines such as dressage, eventing, combined driving, harness, and jumping.riesians have been crossbred for more than a century. Therefore, in 1879, the Friesian registry created two books: one for purebred Friesians, and another for crossbreeds. By 1907, crossbreeding had become so common that the rules were changed again to combine the two registries back into one book.