Fig. 1
From: Diagnosis, treatment, and misdiagnosis analysis of 28 cases of central nervous system echinococcosis
Brain Echinococcus granulosus. a CT scan revealing a solitary cystic lesion located in the right frontotemporal lobe. The margins are well delineated. The intralesional fluid displays the same attenuation value as that of CSF. There is no obviously perilesional edema. b CT scan shows multiple cystic lesions in frontoparietal lobe, with the same density as CSF. c MRI T1-weighted images shows a homogeneous, thin-walled cystic lesion (yellow arrows). There is significant mass effect on the lateral ventricular system. Midline shift is 2 cm. Cyst signal is isointense relative to CSF. d MRI shows a cystic lesion hyperintense on T2-weighted images (similar to CSF) with a hypointense halo around the cyst capsule (yellow arrow). e Dowling’s technique. f Photomicrography (HE, original magnification, ×400) shows Echinococcus granulosus infection of the brain