case_images: PMC10884722_01
case_images: Preoperative imaging including MRI and CT scan.. (A) CT scan without contrast shows an expansive soft tissue mass with bevelled edges, measuring approximately 1.5 x 1.8cm in the right frontal bone. Notably, the mass reaches the surface of dura without infiltrating the brain parenchyma (white arrow). (B) T1-weighted MRI axial view reveals a hypo-intense lesion on the right frontal skull lesion (white arrow). (C) T2-weighted MRI sagittal view reveals tumor impingement of the dura (white arrow).. CT: computed tomography; MRI: magnetic resonance imaging
case_images: cureus-0016-00000052834-i01.jpg
case_images: PMC10884722_01_cureus-0016-00000052834-i01.jpg
case_images: FIG1
case_images: MRI and non-contrast CT scans of the head were conducted, as shown in Figure 1, to rule out the presence of other suspected pathologies, such as osteosarcoma, fibrous dysplasia, and cystic lesions.
case_images: Microscopic views of the pathology specimen captured at varying levels of magnification. . (A) H&E: 10x, (B) H&E: 40x. Cellular lesions composed of a large number of osteoclast-like giant cells (red arrows), between which mononuclear cells are embedded (black arrows). No atypical mitosis or necrosis seen.. H&E, hematoxylin and eosin
case_images: cureus-0016-00000052834-i02.jpg
case_images: PMC10884722_01_cureus-0016-00000052834-i02.jpg
case_images: FIG2
case_images: Interspersed between these giant cells were mononuclear round to oval cells and spindled cells exhibiting a pale eosinophilic cytoplasm, nuclei with dispersed chromatin, and small nucleoli, as illustrated in Figure 2.