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• Clinical Article •
MRI features of brain metastasis of alveolar echinococcosis
TANG Gui-bo  YANG Guo-cai  ZHANG Qing-xin  YANG Zhen  LIANG Lin  GUO Jian-zhong  ZHANG Zhong 

DOI:10.3969/j.issn.1674-8034.2010.03.005.


[Abstract] Objective: To investigate the MRI manifestations of brain metastasis of alveolar echinococcosis so as to gain more insights into the disease.Materials and Methods: Twenty cases of alveolar echinococcosis underwent MRI, CT, ultrasound and laboratory-related examinations and were confirmed by surgical pathology, all the data were analyzed.Results: All of 20 patients with brain metastatic alveolar echinococcosis had primary history of hepatic alveolar echinococcosis. Twelve of them had received surgical treatment, while 8 of them had undergone ultrasound-guided puncture treatment or biopsy. Four of 20 cases had single lesion (20%), 16 cases had multiple lesions (80%). There were pulmonary metastasis in 6 cases, kidney and adrenal gland metastasis in 3 cases. MRI features were as follows: There were round or irregular-shaped multiple aggregation of small vesicles-like changes, the cross section was honeycomb shape, T1WI and T2WI showed mainly low signals. The lesions were accompanied by obvious edema. 'Alveolar echinococcosis' embolus in hepatic vein and portal vein were found in 4 cases.Conclusion: Brain is one of the most vulnerable organs of hepatic alveolar echinococcosis. MRI manifestations such as honeycomb-shaped small vesicles and T1WI, T2WI low signals is the valuable characteristics of brain metastasis of alveolar echinococcosis.
[Keywords] Alveolar echinococcosis；Brain；Metastasis；Magnetic resonance imaging

TANG Gui-bo* Imaging Center, Qinghai Provincial People's Hospital, Xining 810007, China

YANG Guo-cai Imaging Center, Qinghai Provincial People's Hospital, Xining 810007, China

ZHANG Qing-xin Imaging Center, Qinghai Provincial People's Hospital, Xining 810007, China

YANG Zhen Imaging Center, Qinghai Provincial People's Hospital, Xining 810007, China

LIANG Lin Imaging Center, Qinghai Provincial People's Hospital, Xining 810007, China

GUO Jian-zhong Imaging Center, Qinghai Provincial People's Hospital, Xining 810007, China

ZHANG Zhong Imaging Center, Qinghai Provincial People's Hospital, Xining 810007, China

*Correspondence to: Tang GB, E-mail: qhtgb@sohu.com

Conflicts of interest   None.

Received  2010-02-02
Accepted  2010-03-06
DOI: 10.3969/j.issn.1674-8034.2010.03.005
DOI:10.3969/j.issn.1674-8034.2010.03.005.

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