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Clinical Problem Solving: Radiology
October 20, 2008

Radiology Quiz Case 1: Diagnosis

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Copyright 2008 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.2008

Arch Otolaryngol Head Neck Surg. 2008;134(10):1114. doi:10.1001/archotol.134.10.1114

Diagnosis: Benign cementoblastoma

Benign cementoblastomas, which are odontogenic tumors of ectomesenchymal origin, are characterized by the proliferation of cellular cementum, and little is known about their pathogenesis. They are predominantly seen in young persons. Ulmansky et al1reviewed the international literature and reported that close to three-fourths of the patients (73%) were younger than 30 years (age range at diagnosis, first to seventh decades of life2). Sex distribution varied among different series, and some authors3have reported that males are affected more frequently than females (male to female ratio, 1.2:1.0).4The mandible is involved more often than the maxilla (mandible to maxilla ratio, 2.4:1.0).5,6The tumor usually involves an erupted permanent tooth. The mandibular permanent molars and premolars are most commonly involved and may be affected in 75% of cases.7Deciduous teeth are rarely affected.

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