The cause is unknown. Histological examination showed the cysts contained pink hyaline-like material, foreign body-type giant cells in the cyst's wall, with chronic inflammatory cell fluid. The gas-filled cysts are identified with CT imaging. The gas contained in the cysts has been analysed and consists of nitrogen, oxygen, argon, carbon dioxide, and sulphur dioxide. Treatment may not be required and no complications follow the resolution of the cysts. It may be associated with immunosuppression, trichomonas, or Haemophilus vaginalis infection.<unk>  emphysematous is characterized by gas-filled cysts in the vaginal wall.
Vaginitis emphysematosa
Cystitis glandularis
Mucocele
Angina bullosa haemorrhagica
Rhinitis medicamentosa
Collaural fistula
Atrophic vaginitis
Trichostasis spinulosa