162 S.E.2d 909 GEORGIA CASUALTY SURETY COMPANY et al. v. MILLS. 43601.Court of Appeals of Georgia.SUBMITTED MAY 6, 1968. DECIDED JUNE 24, 1968. REHEARING DENIED JULY 23, 1968. EBERHARDT, Judge. Where the medical evidence was conflicting as to whether a moderate brain concussion received when the employee fell from a truck aggravated a pre-existing cancerous […]