Imaging features of Stafne bone defects on computed tomography: An assessment of 40 cases
Morita Lucas, Munhoz Luciana, Nagai Aline Yukari, Hisatomi Miki, Asaumi Junichi, Arita Emiko Saito,
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( Morita Lucas ) - University of Sao Paulo School of Dentistry Department of Stomatology
( Munhoz Luciana ) - University of Sao Paulo School of Dentistry Department of Stomatology
( Nagai Aline Yukari ) - University of Sao Paulo School of Dentistry Department of Stomatology
( Hisatomi Miki ) - Okayama University Medical School Departament of Oral and Maxillofacial Radiology
( Asaumi Junichi ) - Okayama University Medical School Departament of Oral and Maxillofacial Radiology
( Arita Emiko Saito ) - University of Sao Paulo School of Dentistry Department of Stomatology
Abstract
Purpose: This study was performed to assess and describe the imaging features of 40 cases of Stafne bone defects (SBDs) on computed tomographic (CT) examinations.
Materials and Methods: This study collected data, including age and sex, from 40 patients with SBDs who underwent CT exams. The imaging features of the SBDs were assessed in terms of their location, average size, the relationship of their contour with the cortical plate of the lingual mandible, bone margins, degree of internal density, shape, topographic relationship between the defect and the mandibular edge, the distance from the SBD to the base of the mandible, and the Ariji classification (type I, II, and III).
Results: The average age was 57.3 years (range, 28?78 years), and the patients were predominantly male (70%). In all cases (100%), the posterior unilateral lingual SBD variant was observed. Within the Ariji classification, type I was the most common (60%). Among the most frequently observed radiographic characteristics were thick sclerotic bone margin across the entire defect contour, completely hypointense internal content, an oval shape, and continuity with the mandibular base with discontinuity of the mandibular edge.
Conclusion: This study showed that posterior SBDs could present with an oval or rounded shape, complete hypodensity, and thick sclerotic margins. Likewise, SBDs could appear almost anywhere, with minor differences from the classic SBD appearance. It is fundamental for dental practitioners to know the imaging features of SBDs, since they are diagnosed primarily based on imaging.
키워드
Bone Cysts; Radiography, Panoramic; Salivary Glands; Multidetector computed tomography
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