“…Fifty-eight reports mention retained surgical sponges after abdominal, gynecological, or urological operations, and 13 concern intrathoracic procedures. However, only seven reports pertaining to neurosurgical operations were found, either cranial [8,11] or spinal [3,4,9,10,12]. Undoubtedly, retained surgical sponges occur much less commonly after spinal operations than after those in the abdominal cavity [10], but it seems that the current volume of literature represents an underestimation of the incidence of surgically retained foreign body infections [9].…”