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A: Air accumulation in the subcutaneous spaces of the infraorbital area (thin white arrow), infratemporal space (black arrow) and posterolateral area of the masseter muscle (thick white arrow). B: Air accumulation in the pterygomandibular space (black arrow), parapharyngeal space. C: Air accumulation in the retropharyngeal space (small white arrow) and masseteric space (large white arrow).
