Mixed Periapical Lesion: An Atypical Radicular Cyst with Extensive Calcifications

• Autor(a) principal: Ramos-Perez,Flávia Maria de Moraes
• Data de Publicação: 2014
• Outros Autores: Pontual,Andréa dos Anjos, França,Talita Ribeiro Tenório de, Pontual,Maria Luiza dos Anjos, Beltrão,Ricardo Villar, Perez,Danyel Elias da Cruz
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Brazilian Dental Journal
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402014000500447
• topic: differential diagnosis; mixed radiographic image; periapical cyst; radicular cyst.

The radicular cyst is an inflammatory odontogenic cyst of endodontic origin. Radiographically, the lesion appears as a periapical radiolucent image. This report describes a very rare case of a mixed periapical radiographic image diagnosed as a radicular cyst. A 37-year-old female patient presented a mixed, well-circumscribed image located in the periapical region of the left maxillary central incisor, which presented unsatisfactory endodontic treatment. Microscopic examination revealed a cavity lined by non-keratinized squamous epithelium and extensive calcifications in the cystic lumen and lining epithelium. Diagnosis of radicular cyst with extensive calcifications was established. Endodontic retreatment was performed and no radiographic signs of recurrence were observed 18 months after treatment. Although very rare, a radicular cyst should be considered in the differential diagnosis of a mixed periapical image associated to teeth with pulp necrosis.