<prompt> Base of the skull fracture presents with involvement of the petrous temporal bone, which of the following important sign:Subconjunctive haematomaCSF rhinorrhoeaRaccon eyesBattle sign  <response>: Battle sign 595-Baily Love 24th 302-B L 25thBase of Skull Fractures Anterior fossa fracture - May open into the frontal or ethmoid air sinuses or run across the cribriform plate. Presents with sub conjunctival hematoma, anosmia, epistaxis, nasal tip anaesthesia, CSF-rhinorrhea and occasionally carotico-cavernous fistua. Periorbital haematoma or raccoon eye indicate subgaleal haemorrhage. Middle fossa fracture involving petrous temporal bone presents with CSF otorrhoea, haemotympanum, occicular disruption, Battle sign or VII and VIII cranial nerve palsiesBattle sign - bruising behind the ear appearing 36 hours after a head injury with a petrous temporal base of skull fracture 