“…Catheter angiography demonstrated a traumatic aneurysm on the day of trauma (day 0) in 20 cases, 1,6,7,15,16,[20][21][22]24,27,55,61,67,79) and as late as several years after trauma in six cases. 8,12,14,76) False negative angiography occurred on day 0 in 17 cases, 7,22-24,32,36,43, 59,62,67,69,75,80,84,85) on day 1 in two cases, 71,74) on day 2 in one case, 1) on day 3 in one case, 81) on day 4 in two cases, 3,28) on day 7 in one case, 11) on day 10 in one case, 37) and on day 80 in one case. 33) Spontaneous cure (disappearance) of the traumatic aneurysm, which had been demonstrated previously, occurred in nine cases between day 12 and 7 years from the trauma.…”