Patient's question:
Pregnant for almost 7 months, the width of the cerebellomedullary cistern is 8.4Doctor's answer:
If the width of the cisterna magna exceeds 10mm, it should be alert to ventricular expansion and accumulation of cerebrospinal fluid. Close follow-up observation of its outcome should be conducted. If the expansion progressively increases during the follow-up observation, hydrocephalus can be diagnosed. Regular reexaminations are recommended.