The following table or figure may be downloaded to PowerPoint for personal use in teaching and presentations. This feature is available to all subscribers to the journal.

You MUST read and follow the guidelines at Request to Reproduce AJR Content if you are distributing or using AJR content beyond academic use (limited distribution, non-revenue producing, or educational purposes).

(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)

Fig. 1. —Ganglioglioma in 7-year-old boy with headaches. Unenhanced T1 weighted sagittal MR image shows inho mogeneous mass with hypointense cys tic components located in left ventricle This lesion, which measured 84 cm³, was representative of size of other tumors in early childhood group. Growth of tumo into lateral ventricle may have allowed tumor to attain large size with less mass effect on rest of brain than would be expected if tumor had been solely intra parenchymal. Smaller than expected mass effect could explain delay seen in patient's onset of symptoms (and delay in diagnosis) compared with mass of same size located solely in brain parenchyma.