CT appearances of peripheral primitive neuroectodermal tumors
- VernacularTitle:外周性原始神经外胚层肿瘤的CT表现
- Author:
Guangzhao YANG
;
Xiangyang GONG
- Publication Type:Journal Article
- Keywords:
Bone neoplasms;
Neuroectodermal tumor,peripheral;
Tomography, X ray computed
- From:
Chinese Journal of Radiology
2001;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the CT features and enhance the knowledge of peripheral primitive neuroectodermal tumors(pPNETs). Methods The CT appearances of 6 patients with pPNETs pathologically proved were analyzed retrospectively. Results The CT findings of 5 bone pPNETs were soft mass of homogeneous or heterogeneous density and osteolytic destruction without osteosclerosis, periosteum reaction and tumor bone formation. Follow up CT showed the mass shrunken significantly after radiotherapy in one case. In 1 patient of chest Askin tumor, the lesion appeared as a vast heterogeneous soft mass with moderate inhomogeneous enhancement. The mass invaded mediastinum and local bone destruction were not detected. Four months after operation, a small homogeneous tumor occurred in right chest wall with moderate homogeneous enhancement. Conclusion The manifestations of pPNETs on CT have no characteristics. However, CT can show the intra tumor structures and the extent of the tumor very well, which is helpful in differentiating diagnosis,predicting resectability, detecting distant metastases and evaluating the response to treatment.
