To the Editor: The relation between opsoclonus and occult neuroblastoma (N.E.J.M. 279:475, 1968) is a most fascinating one and one that may not be quite so coincidental. After reading the aforenoted discussion by Solomon and Chutorian, members of our staff were immediately struck by the remarkable parallel between their report and a case we had the privilege of recently attending.T.H., a 13-month-old boy, was admitted to our hospital with a progressive 6-week history of "twitchy and jerky" movements of the face, lips, tongue, trunk and upper extremities; in addition, there had been progressive loss of head control, irritability, . . .