“…Adult RPA is very rare as the lymph nodes in the retropharyngeal space gradually degenerate after the age of 5 years. RPA may lead to complications such as acute airway obstruction, jugular necrotizing fasciitis, mediastinitis, aspiration pneumonia, thrombosis of the jugular vein, carotid artery erosion, and sepsis when diagnosis and treatment of the disease are delayed or the disease progresses, and some severe cases are life-threatening[1-3]. Herein, we present a case of RPA with acute airway obstruction as the main manifestation in a 66-year-old woman.…”