The case histories are presented of three patients with circumferentia
l subglottic stenoses who presented, over a six-month period, to a tea
ching hospital's Otolaryngology department. No recognisable cause for
their subglottic stenoses was found. Traumatic, iatrogenic, infectious
and specific inflammatory processes were excluded. The histopathologi
cal evidence suggested a chronic inflammatory process. All patients we
re treated by resecting the stenosis with a carbon dioxide laser. One
patient required an emergency tracheostomy for airway obstruction. A r
eview of the published literature on this rare condition is given.