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- W2358893764 abstract "Objective To describe the clinical, CT and MRI findings of peripheral primitive neuroectodermal tumors (pPNET). Materials and Methods Clinical, CT and MRI features in 8 cases with pPNET proved by pathological results were reviewed retrospectively.Results Primary sites were upper limbs (n=1), head (n=2), retroperitoneum (n=2), paraspinal (n=3). At the first time of diagnosis, 2 patients had bone metastases and 1 patient had subjaw lymph nodes enlargement. The tumors usually had big size with aggressive behavior , tended to displace adjacent soft tissue structures. The tumors were shown as density similar to soft tissue on CT and intermediate signal intensity on T_1-weighted images, hyperintensity on T_2-weighted. After gadolinium administration, annular and honeycomb enhancement was seen. 1 case had calcification in tumor. Local or bony invasion in bone marrow involvement with periosteal new bone formation were seen in 3 patients.Conclusion pPNET is a rare small round cell malignancies with poor prognosis commonly in children. Radiologic appearance is not specific, but MRI and CT are useful in predicting prognosis and resectable, in detecting distant metastases, and in the evaluation of response to treatment." @default.
- W2358893764 created "2016-06-24" @default.
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- W2358893764 date "2005-01-01" @default.
- W2358893764 modified "2023-09-23" @default.
- W2358893764 title "Peripheral Primitive Neuroectodermal Tumors: Clinical, CT and MRI Features" @default.
- W2358893764 hasPublicationYear "2005" @default.
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