A 3 year old child is brought to the emergency room by her concerned parents. They state the girl has been complaining of a severe headache and has had two episodes of vomiting. On physical examination, there is bilateral papilledema and an impaired level of consciousness. Emergency contrast CT scan demonstrates displacement of the ventricular system by a multilocular "mass" with well-defined white high-attenuation rings around black low-attenuation centers. The lesion involves the cerebellum. To which of the following conditions is this lesion most likely related?