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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Battle sign -
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The correct answer is  The synopsis of forensic medicine & toxicology;Dr k .s narayan reddy; 28th edition; pg.no. 107; A bruise behind the ear may indicate a basal fracture rather than a direct blow behind the ear .(BATTLE 'S SIGN) It is an example of ectopic bruising or percolated contusion.