Abstract
The Teaching NeuroImage by Nie et al.1 is not of a cysticercus as mentioned by the authors; instead, it is a clear example of cystic hydatid disease, caused by infection with Echinococcus spp. A single, large, unilocular nonenhancing parenchymal brain cyst with well-defined borders and not surrounded by edema is fairly characteristic of this parasitic disease.2 In addition, scolices are clearly shown in surgical and histopathologic photographs. Proper interpretation of currently available sets of diagnostic criteria for neurocysticercosis is advised to avoid these diagnostic pitfalls.3,4
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