“…In three patients (12.5 % ) the PFEDH was bilateral, comparable to the report by Karasu et al [31] . However, acute bilateral PFEDHs are rare and up until 1997 there were only nine patients with such a lesion reported in the literature [1,8,10,20,43,50,55,58,62] . Fracture of occipital bone is a common feature (in 58 -95 % of PFEDHs), even though not all of them are visible on plain X-ray of the skull.…”