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Aneurysmal bone cysts in gnathic bones: clinicopathological profile through a multicenter study and literature review
Jonathan França da Silva Cavalcanti1, Weslay Rodrigues da Silva1, Caroline Augusta Belo Faria2
1Department of Oral and Maxillofacial Pathology, School of Dentistry, Postgraduate Program in Dentistry, Universidade de Pernambuco, Recife, Brazil.
Objective:
To analyze the clinicopathological profile of aneurysmal bone cysts (ABCs) in gnathic bones in a Brazilian population through a multicenter study and literature review.
Study Design:
A retrospective study across six Brazilian centers for oral and maxillofacial pathology collected data on sex, age, pain, location, radiographic features, and associated lesions. A literature review was performed using four databases.
Results:
Among 55,068 biopsies of oral and maxillofacial lesions, 26 cases were diagnosed as ABCs. Most patients were females, with a mean age of 24.7 years. The mandible was the most affected site, and pain was absent in 76.9% of cases. A multilocular radiographic pattern with bone expansion was observed in 76.92% of cases. It was associated with ossifying fibroma and fibrous dysplasia in 11.54% and 3.85% of cases. The review included 35 articles and 59 cases, with 52.54% female patients, a mean age of 18.8 years, and mandibular involvement in 76.27%. Multilocularity with expansion occurred in 61.02%, and pain in 61.02%.
Conclusions:
This multicenter study provides the first epidemiological estimate of gnathic ABCs (0.047%) and suggests a female and young adult predominance.
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