Occasional resolution of multiple parenchymal brain calcifications in patients with neurocysticercosis

Neurocysticercosis is the infection of the CNS by cysts (larvae) of Taenia solium, a worldwide tropical disease. Cysticercosis lesions frequently locate in the gray-white matter border of the cerebral hemispheres but also occur in other neuroanatomical locations, e.g., spine, ventricles, subarachnoid space, etc.^1,2 Parenchymal brain cysts usually undergo a degeneration process that ends in a calcified scar. Calcified cysticercosis cysts are easily demonstrated by CT scan³ and are assumed to persist unchanged throughout the years.^4,5 We describe 2 patients in whom well-demonstrated calcified lesions were no longer seen on CT, one after 8 years and the other after 9 years. Although unusual, these cases provide proof that calcified brain cysticercosis lesions may occasionally resolve.