To the Editor.
—Childhood suprasellar gliomas may behave as benign hamartomas originating in the chiasm, optic tract, or hypothalamus.1-4 Visual loss is caused by infiltration of the visual pathways, and surgical extirpation is generally not indicated.We present a case of childhood suprasellar cystic astrocytoma that appeared to arise from the hypothalamus, insinuate forward beneath the chiasm, and produce progressive visual loss by external compression. Surgical removal of the tumor resulted in virtually complete visual recovery.
Report of a Case.
—A 15-year-old boy complained of four months of slowly progressive visual loss in the right eye. His best corrected visual acuity was 20/30 OD and 20/25 OS. Both discs were slightly pale and examination of the visual field disclosed a bitemporal superior quadrantanopic defect to small targets that encroached on fixation in the right eye.Skull roentgenograms showed a J-shaped sella turcica. A cranial computed tomographic scan disclosed a
Coppeto JR, Monteiro MLR, Uphoff DF. Exophytic Suprasellar Glioma: A Rare Cause of Chiasmatic Compression. Arch Ophthalmol. 1987;105(1):28. doi:10.1001/archopht.1987.01060010034019