“…In congenital cases, it is thought they result from abnormal embryonic foregut development. 12 In people, bronchogenic cysts have been reported within the mediastinal, pulmonary, cervical, retroperitoneal, pericardial, paravertebral, and perianal regions. While the majority of human cases are found in the mediastinum, there is no known report of mediastinal bronchogenic cysts in veterinary patients.…”