Recurrent histiocytosis X with mandibular lesions

A 19-year old male patient suffered a recurrence of histiocytosis X after 11 years of apparent remission. Radiographic lesions were found in the mandible. Loose and painful teeth were present. Low-dose radiation to the mandible and oral chemotherapy were followed with regression of bony lesions. Reports of incidence, treatment methods, and recurrences are reviewed.