A distinction is made between retropharyngeal abscesses and adenophlegmons, lateral abscesses and adenophlegmons of the peripharyngeal space, intrapharyngeal (visceral) phlegmons, phlegmonous lingual periamygdalitis, Ludwig's angina, abscess of the epiglottis, abscess of the lateral pharyngeal ridges, thyroid gland damage, and cervical mediastinitis.