*Perforation may occur with sharp foreign bodies. This may lead to [[cellulitis]] or [[pleurisy]] and other complications.
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*Rupture of the [[Oesophagus - Anatomy & Physiology|oesophagus]] admits pathogenic organisms to the mediastinum and fascial planes of the neck. Both are composed of loose connective tissue and communicate with each other.
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*Infection spreads rapidly as a cellulitis, aided possibly by peristalsis and pulsation of the carotid arteries, and soon leads to pleurisy.