What is causing this mass effect?
A 23 year-old male presented complaining of headaches, vomiting and photophobia. He had no history of neurologic illness. An MRI revealed obstructive hydrocephalus and a mass in the left lateral ventricle.
Do you recognise this condition?
Answer: This patient was diagnosed with hydrocephalus caused by ependymoma. He underwent a transfrontal operation and the tumor was completely resected macroscopically.
Join the discussion on Figure 1.