32.Below the vocal cords in this larynx are large ulcerations. Such subglottic ulcers are produced with prolonged endotracheal intubation in which the cuff of the endotracheal tube fits too tight.Thus, ulcerations can be produce by mechanical forces. In fact,so-called "pressure ulcers" or "decubitus ulcers" can form on skin over bony prominences in persons who are bedridden for an extended time.

32.图示喉部声带下大溃疡。可由长时间的气管插管固定太紧引起机械性损伤。实际生活中，长时间的卧床不起可引起突起骨骼表面的皮肤发生“压迫性溃疡”或褥疮。