A large follicular cyst in an older patient was found on the occasion of an accidental fracture of the mandible.

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Follicular cysts are often associated with unerupted teeth. These cysts are derived from the enamel organ of the developing tooth and may be formed at different stages of the development of tooth. It usually appears in patients below the age of 20 years and unusually above the age of 50 years.<BR>We have found by chance a large follicular cyst in a 74-year-old male. He was overturned in a bus and ther suffered facial swelling and difficulty in opening his mouth. He was referred to our clinic. A fracture was found on the right mandibular ramus and a large follicular cyst was located on the right mandibular ramus extending toward the same side canine region.<BR>We enucleated the cystic epitherial lining, and extracted the unerupted tooth. The large cavity was packed with gauze. Because of mild fractrue displacement, he was treated by neither reduction nor fixation.<BR>Postoperative healing was uneventful, and the pack was finally removed on the 30 th postoperative day. Now nine months have passed, and the cavity is almost closed and there are no signs of recurrence.
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