Chronic maxillary atelectasis is a descriptive term which is characterized by a persistent decrease in the maxillary sinus volume due to inward bowing of its walls. It is not considered synonymous with - but can include the term silent sinus syndrome, typically when there is also spontaneous enophthalmos, hypoglobus, and/or mid-facial deformity in the absence of complaints related to the nose and paranasal sinuses 1.
Chronic maxillary atelectasis may be classified into three successive clinicoradiological stages:
- stage I: membranous deformity
- stage II: bony deformity
- stage III: clinical deformity
Treatment and prognosis
Intervention may depend on a number of factors, such as symptoms, with some suggesting it is better managed in a two-step manner. It is first mandatory to relieve the obstruction of the maxillary sinus and restore its normal ventilation. This is usually achieved via functional endoscopic sinus surgery.
- 1. Mangussi-Gomes J, Nakanishi M, Chalita MR, Damasco F, De Oliveira CA. Stage II Chronic Maxillary Atelectasis Associated with Subclinical Visual Field Defect. (2013) International archives of otorhinolaryngology. 17 (4): 409-12. doi:10.1055/s-0033-1351679 - Pubmed
- 2. Kass E S et.al. Chronic maxillary atelectasis. (1997) The Annals of otology, rhinology, and laryngology. doi:10.1177/000348949710600204 - Pubmed
- 3. Hens G et.al. Chronic maxillary atelectasis. (2020) B-ENT. doi: - Pubmed
- 4. Clotilde de Dorlodot, Stephanie Collet, Philippe Rombaux, Mihaela Horoi, Sergio Hassid, Philippe Eloy. Chronic maxillary atelectasis and silent sinus syndrome: two faces of the same clinical entity. (2017) European Archives of Oto-Rhino-Laryngology. 274 (9): 3367. doi:10.1007/s00405-017-4622-8