Sebaceous neoplasm in the lung of a dog.

Summary: Skin tumors are pretty common in dogs, but finding one inside the lungs is unheard of! This report talks about a 10-year-old Cocker Spaniel that had a skin-type tumor (called a sebaceous gland tumor) growing right in its lung. Doctors looked everywhere but couldn't find a tumor anywhere else on the dog's body. This means the tumor actually started in the lung, making it the first ever reported case of its kind!