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.
A crossbred (or crossbreed) dog is what you get when you breed one purebred dog to another purebred dog of a different breed. For example, a Golden Retriever crossed with a Standard Poodle, produces crossbred offspring, like the Goldendoodle to the right. Some people call them hybrid dogs, but that's wrong.A hybrid is the offspring of two different species.For example, a horse bred to a donkey produces hybrid offspring (we call it a mule). But dog breeds are NOT different species. Breed is simply the term we use for an inbred group of dogs within the same species, canis lupus familiaris.Crossing breeds does not produce hybrids. hybrid is the offspring of two different species. For example, a horse bred to a donkey produces hybrid offspring (we call it a mule). But dog breeds are NOT different species. Breed is simply the term we use for an inbred group of dogs within the same species, canis lupus familiaris.