CC BY-NC-ND 4.0 · Revista Chilena de Ortopedia y Traumatología 2022; 63(01): e17-e24
DOI: 10.1055/s-0042-1743285
Artículo Original | Original Article

Plain Radiologic Assessment of Unicameral and Aneurysmal Bone Cysts: Differential Diagnosis

Artikel in mehreren Sprachen: español | English
Faride Martabid
1   Departmento de Radiología, Hospital Regional de Talca, Talca, Chile
,
Matías Romero
2   Departmento de Radiología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
,
Alvaro Burdiles
2   Departmento de Radiología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
,
3   Departamento de Pediatría, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
,
Cristian Garcia
2   Departmento de Radiología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
› Institutsangaben

Abstract

Objective To describe our experience in the differential diagnosis of unicameral and aneurysmal bone cysts using plain radiography.

Patients and method We included patients under 20 years of age with radiographs of histologically-confirmed unicameral or aneurysmal bone cysts found on the Chilean National Bone-Tumor Registry. The radiographs were evaluated by two experienced radiologists. We compared the demographic variables of the patients, and the clinical and radiological variables of both tumors.

Results A total of 97 patients met the inclusion criteria, 65% of whom had simple bone cysts, and 35%, aneurysmal bone cysts. No differences were found regarding age, the bone affected, the size of the lesion, bone expansion, nor cortical thinning. Gender, clinical presentation, cortical interruption, and location of the lesion on the longitudinal and transverse bone axes are parameters that could be used in the differential diagnosis of both cysts.

Discussion According to the literature, unicameral and aneurysmal bone cysts are frequent benign lesions that are difficult to differentiate merely through plain radiographs. Magnetic resonance imaging enables a better anatomical characterization and provides sensitivity and specificity to the diagnosis. However, its availability is limited, and it should be preceded by plain radiography.

Conclusion Plain radiography is still the initial imaging study of choice in patients with clinical suspicion of bone tumor, even in those centers where magnetic resonance imaging is available. Certain demographic and radiological characteristics guide physicians in the differential diagnosis of unicameral and aneurysmal bone cysts.

Nivel de evidencia: Nivel 3


Level of evidence: Level three




Publikationsverlauf

Eingereicht: 05. April 2021

Angenommen: 24. November 2021

Artikel online veröffentlicht:
20. Mai 2022

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