CT and MRI evaluation of peripheral primitive neuroectodermal tumors
- VernacularTitle:CT、MRI检查在外周原始神经外胚层肿瘤诊治中的作用
- Author:
Qin XIAO
;
Yajia GU
;
Tianxi YANG
- Publication Type:Journal Article
- Keywords:
peripheral primitive neuroectodermal tumors;
CT;
MRI
- From:
China Oncology
1998;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Purpose:We present the imaging and pathological features of pPNET tumor in six patients,to add to the knowledge of this tumor. Methods:Retrospective analysis of six pPNETs integrated with data of radiography and pathology. Results:The CT appearance of the tumor arising in soft tissue showed a large,ill-defined,non-calcified mass and heterogeneous appearance with hypodense cystic areas. The tumors demonstrated heterogeneous contrast enhancement. The pPNET arising in bone demonstrated extensive lytic lesion with large soft tissue mass,no newly-born bone and demonstrated heterogeneous contrast enhancement. MRI in SE sequences on T 1 W demonstrated homogeneous intensity for muscle and showed enhancement pattern of multiple internal septa and envelope. On T 2 W image,the tumors were heterogeneous with hyperintense signal. Conclusions:The study of clinic and radiology on pPENT does not show specificity. CT and MRI findings on pPENT can provide more information of it's internal structure,involved area,adjacent vascular and nervous structures. CT and MRI can also be useful in detection of recurrent and metastatic disease and very useful in preoperative staging,and in the planning of the surgical appproach.
