Radiological features of Central Giant Cell Granuloma: Comparative study of 7 case reports and literature review

Abstract

Background: To review and analyze the clinical and imaging features of central giant cell granuloma patients and to review the relevant literatures for the diagnosis and clinical manifestation of central giant cell granuloma.Methods: 7 cases of central giant cell granuloma were retrospectively selected for the study all of which were confirmed by pathology and had relevant imaging investigations. All 7 cases had undergone CT scan, 3 cases had undergone MRI scan. Detailed clinical features were compared along with the imaging findings and analysis was done on the basis of their presentation and imaging features.Results: The clinical features, radiologic features were varied according to the site of the lesion. CT features include unevenly dense expansile mass causing bone destruction and cortical thinning. While MRI features with low to iso-intensity in T1 weighted and T2 weighted images. There may be presence of cystic degeneration, hemorrhage or hemosiderin deposits or osteoid formation, which can cause T1 and T2 signal changes. On contrast study, the lesion doesn’t enhance but periphery may enhance mildly. Conclusion: Unevenly dense expansile mass with bone destruction and cortical thinning with low to iso-intensity in T1 weighted and T2 weighted images and mildly enhance peripherally, CGCG should be considered.