Lowell E. White

Observations and comments

In the following, a number of illustrated examples will be given of specific regions or pathways in which we have studied axonal degeneration. Our presentation is primarily an attempt to demonstrate the potentialities of the principle as well as its practical application. No exhaustive description of the degenerative process itself or of the pathways mentioned is intended. Our examples are partly from the hippocampal region in the rat, partly from the brain stem of the cat.

Optic Atrophy as an Isolated Sign of Unruptured Carotid Aneurysm

OPTIC ATROPHY as the sole sign of a n unruptured aneurysm of the internal carotid artery has been previously reported as a rare occurrence, b u t the incidence of this lesion appears to be more common than supposed. This suggests that primary, chronic progressive optic atrophy should alert one to the possible diagnosis of internal carotid aneurysm which must b e verified by diagnostic carotid arterio-