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- W2360762499 abstract "Objective To assess the role of CT and MRI in the diagnosis, staging and follow up of esthesioneuroblastoma. Materials and Methods The CT and MRI findings of 12 cases with esthesioneuroblastoma proven histologically were reviewed retrospectively. The site, size and extent of tumor, bone destruction and hemorrhage, necrosis, signal intensity or density changes were analyzed. CT scans were done in 4 cases, 3 had enhanced CT. MRI was done in 9 cases with SE T1WI and T2WI, and enhanced T1WI was obtained in 9 cases. Follow up imaging was performed in 10 cases (CT in 3 cases, MRI in 7 cases). Results ①Staging: According to Kadish staging, there were 0 case with stage A, 1 with stage B and 11 with stage C, accompanied with cervical lymph node metastasis in 2 cases. ②Signal intensity and density changes: On MRI plain scan, tumor signal intensity was homogeneous in 6 cases with hypointensity on T1WI and moderate hyperintensity on T2WI, and tumor signal intensity was heterogeneous in 4 cases with hemorrhage and necrosis. In the 9 cases of enhanced MRI, the tumors were moderately and heterogeneously enhanced in 3 cases, heterogeneously remarkably enhanced in 5 cases and homogeneously marked enhanced in 1 case. The tissue density on plain CT was equal to that of muscle and relatively homogeneous. The tumors showed moderate and homogeneous enhancement in 2 cases and heterogeneous and remarkable enhancement in 1 case on enhanced CT. ③Intracranial and extracranial tumor: 7 cases with intracranial extension, bilateral frontal lobe involvement in 2 cases, right and left frontal lobe invovlement in 1 and 2 cases respectively, bilateral frontal lobes, left insula lobe and basal nuclei involvement in 2 cases, and cerebral dural mater involved solely in 1 case. The brain tissue edema occurred in 6 cases. ④9 cases had clinic follow up, and showed tumor vanished, decreasing in size and recurrence in 3 cases, 5 cases and 1 case respectively. Conclusion The imaging findings of olfactory neuroblastoma are nonspecific. The aim of imaging is to define the area of tumor involvement and staging. Periodical follow up scan is recommended for early detection of recurrence, which is helpful for salvage treatment." @default.
- W2360762499 created "2016-06-24" @default.
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- W2360762499 date "2007-01-01" @default.
- W2360762499 modified "2023-09-24" @default.
- W2360762499 title "The CT and MRI Diagnosis of Esthesioneuroblastoma" @default.
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