A 2-year-old neutered male Siamese cat is presented for regurgitation.
History. The owner reports regurgitation of 1 week in duration. She describes the episodes, which occur immediately after eating, as passive in that they are not associated with retching. The cat seems distressed after eating, the food is expelled immediately after swallowing, and the cat often tries to ingest the food a second time. The patient is reported to be better able to ingest liquids or water. It had also been treated 3 weeks earlier with doxycycline tablets for an upper respiratory tract infection. The cat presented for the current complaint two weeks after discontinuation of the medication.
Examination. The physical examination is unremarkable.
Laboratory Results. The results of a CBC, biochemical profile, and urinalysis are normal.