Chronic Obstructive Sialadenitis due to an Abnormal Wharton's Duct Draining to the Tonsillar Fossa.

Introduction: Chronic obstructive sialadenitis (COS) is an entity that causes a marked loss in patient quality of life, including changes in eating habits and a progressive loss of gland function. It is characterized by repeated episodes of painful glandular swelling often requiring emergency care. There are multiple causes of COS, including lithiasis, strictures, anatomical variants, and others.