magnetic resonance spectroscopy findings of intracranial chondroma and chondrosarcoma with a non-skull base origin: a report of two cases

Introduction: intracranial chondroma and chondrosarcoma are very rare tumors that mainly originate from the base of the skull. advanced neuroimaging studies, including magnetic resonance spectroscopy (mrs), play a pivotal role in both tumor diagnosis and presurgical planning. case presentation: we present two cases of intracranial cartilaginous tumors, including a chondroma and a chondrosarcoma, both of which presented with severe headaches. due to inconclusive conventional mri and mrs results, they were both primarily diagnosed as intra-axial brain tumors. however, pathological reports later confirmed the diagnosis of a chondroma and a chondrosarcoma. conclusion: based on the present findings, the use of advanced neuroimaging techniques, such as mrs, may improve diagnostic accuracy. we believe that mrs can play a significant role in the surgical planning of similar cases. also, reporting rare cases worldwide can contribute to the improvement of radiographic diagnosis.