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Odontogenic keratocyst of the maxilla

In 1941, at the age of 25 years, the patient reported to his Army dentist with what appeared to be a dental abscess of the left upper jaw. A swelling was incised and drained. The resulting fistula continued to discharge into the mouth until February 1971, when the swelling recurred. Examination revealed a painful, bluish-grey swollen area at the site of the original lesion, with a fistula discharging foul serous fluid. Radiographs (Fig. 1) showed an unerupted canine tooth lying obliquely in the alveolus, in the anterior wall of the maxilla.