Final answer:
Guttural pouch tympany is the accumulation of gas in the anatomical structure in horses called the guttural pouch. It causes symptoms like difficulty swallowing and respiratory distress.
Step-by-step explanation:
Guttural pouch tympany refers to the accumulation of gas in the guttural pouch, which is an anatomical structure in horses. It is characterized by a distension of the pouch due to the build-up of gas, leading to symptoms such as difficulty swallowing, nasal discharge, and respiratory distress.