Radiological findings of hemangioendotheliomas in the orbit
- VernacularTitle:眼眶血管内皮瘤的影像表现
- Author:
Jun-Fang XIAN
;
Li-Yan HE
;
Bin LI
;
Fei FAN
;
Zhong-Lin LIU
;
Ben-Tao YANG
;
Ji-Tong SHI
;
Yu-Zhi AN
;
Zhen-Chang WANG
;
- Publication Type:Journal Article
- Keywords:
Hemangioendothelioma,epitheloid;
Orbit neoplasms;
Tomography,X-ray computed;
Magnetic resonance imaging
- From:
Chinese Journal of Radiology
1994;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective Radiological findings of very rare hemangioendotheliomas in the orbit have not been reported.Radiological findings on different imaging studies of four cases with hemangioendotheliomas in the orbit were described and the literature was reviewed so as to understand features of hemangioendotheliomas in the orbit.Methods CT and MR imaging findings of four cases with hemangioendotheliomas in the orbit confirmed by histopathology were analyzed retrospectively.Results A mass was found in the superotemporal quadrant in the anterior extraconal space of the orbit in three cases and in the inferonasal quadrant in one case. CT studies revealed a homogeneously ovoid tumor with benign remodeling of the adjacent bone in three cases and a homogeneously irregular mass without any bony change in one case.MR imaging showed a mass in the orbit that was mildly hypointense on T_1-weighted sequences and hyperintense on T_2-weighted images with areas of flow voids representing vessels within the peripheral portion of the tumor in four cases.All four patients demonstrated significant enhancement immediately after intravenous administration of contrast material and a type D time-signal intensity curve (TIC)pattern on MR dynamic contrast enhancement scanning.Conclusions Hemangioendotheliomas in the orbit appeared as a hypervascular tumor predominantly in the extraconal space with areas of flow voids within the tumor and early significant enhancement of the tumor after intravenous administration of contrast material.MR imaging is the best method in demonstration of features of hemangioendotheliomas in the orbit and in diagnosis of these tumors.
