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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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What is present in the retropharyngeal space of Gillette?
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The correct answer is  Retropharyngeal Space is a potential space between the buccopharyngeal fascia and the prevertebral fascia, extending from the base of the skull to the superior mediastinum. 
It permits movement of the pharynx, larynx, trachea, and esophagus during swallowing.