A 10-year-old boy with the history of headache, anorexia, and vomiting was referred to Radiology Department of French Medical Institute for Children to undergo a brain CT scan. The CT scan was performed with 128 slices' Siemens scanner. Precontrast images demonstrated a well-defined, rounded, hyperdense lesion at the level of the foramen of Monro causing moderate dilatation of the lateral ventricles. No specks of calcification were appreciated in the cyst. No significant enhancement appeared after intravenous contrast injection (Figures and ).
A 47-year old male presented with progressive morning headaches for a total of 10 days, which was associated with nausea and vomiting. He had no history of trauma or loss of consciousness.