Andrew Stephen Akman MD, Presenter: Nothing to Disclose

Osamu Sakai MD, Abstract Co-Author: Nothing to Disclose

Brian Lawrence Dunfee MD, Abstract Co-Author: Nothing to Disclose

Anita Gohel PhD, Abstract Co-Author: Nothing to Disclose

Vikki L Noonan DMD, Abstract Co-Author: Nothing to Disclose

1. To learn imaging findings, etiology and clinical significance of periapical lucency. 2. To be able to generate a differential diagnosis of periapical lucency.

Periapical lucency is frequently noted on CT as an “incidental” finding and often underappreciated by “medical” radiologists. Periapical lucency is usually directly related to tooth pathology, representing periapical abscesses, periapical granulomas and periapical cysts. This finding can also represent an entity unrelated to tooth pathology which presents in a periapical location such as an early lesion of focal cemento-osseous dysplasia, an odontogenic keratocyst, a lateral periodontal cyst, an ameloblastoma, or a central giant cell granuloma. Radiological findings of periapical lucency on CT, panoramic radiograph, occlusal and periapical images are demonstrated. Histological images of these lesions are also presented to help better understand the disease process. The differential diagnosis and clinical significance are discussed.

Akman, A, Sakai, O, Dunfee, B, Gohel, A, Noonan, V, Periapical Lucency, Underappreciated Lesions on CT: Imaging Findings, Differential Diagnosis, and Clinical Significance.  Radiological Society of North America 2005 Scientific Assembly and Annual Meeting, November 27 - December 2, 2005 ,Chicago IL. http://archive.rsna.org/2005/4413184.html