Chordomas: MR imaging.

Abstract

Twenty histologically verified intracranial and upper cervical chordomas were retrospectively studied with both magnetic resonance (MR) imaging and computed tomography (CT), and the advantages of each modality were compared with regard to three criteria: detection of tumor, delineation of extent of tumor, and characterization of tumor. MR imaging and CT were equivalent in permitting the detection of chordomas. MR imaging was considerably better in delineating the full extent of the tumor, which would influence establishment of treatment. MR imaging also provided a degree of histologic specificity that would be useful in prognosis.

Posterior mediastinal chordoma: MR imaging findings.

“…Areas of necrosis and recent and old hemorrhages may exist in the tumor [6]. Chordomas are lobulated tumors with generally low to intermediate signal intensity on Ti -weighted MR images [5,6]. According to a report comparing the signal intensity of the tumor with the signal intensities of other tissues within the field of view, the signal intensity of the tumor on Ti -weighted MR images was predominantly hyperintense or isointense relative to muscle [6].…”

MRI in the Evaluation Spinal Cord Tumors with Histopathological Correlation

“…The lesions are high signal on T2-weighted images. (23) 75% of cases show internal septations and a surrounding capsule of low signal intensity. Areas of hemorrhage and cystic changes can be seen.…”

Magnetic Resonance Imaging of Primary Intradural-Extramedullary Thoracolumbar Hydatid Cyst

“…Chordoma shows a lytic, destructive, mixed solid and cystic lesions. An associated anterior or lateral soft tissue mass is often present (8). Metastasis shows pedicle destruction, multifocal lytic vertebral body lesions, pathologic compression fracture and paraspinous soft tissue mass (9).…”