Chronic maxillary atelectasis without obstruction of the maxillary ostium - A case report

Yuki Numano, Kazuhiro Nomura, Tomotaka Hemmi, Jun Suzuki, Risako Kakuta, Mitsuru Sugawara

Research output: Contribution to journalArticlepeer-review


Rationale: Chronic maxillary atelectasis (CMA) is assumed to be caused by negative pressure in the maxillary sinus secondary to the obstruction of the ostiomeatal complex. Patient Concerns: A 49-year-old female patient first presented to our hospital complaining of right nasal congestion, rhinorrhoea and cheek pain. Diagnosis: Computed tomography (CT) accidentally revealed the inward bowing of the left maxillary sinus, which is a typical sign of CMA or silent sinus syndrome despite the maxillary ostium being potent. Treatment: We did not consider any intervention for CMA because she had no symptoms related to it. Outcomes and Take-Away Lessons: No progression was noted clinically or on CT at the 6-month follow-up. The pathogenesis of CMA in our patient was not explainable by the commonly accepted theory. Apparent hypertrophy of the left maxillary bone was confirmed on CT, thus osteitis with chronic rhinosinusitis might be the potential cause of CMA in the open maxillary sinus.

Original languageEnglish
Pages (from-to)224-226
Number of pages3
JournalAnnals of Maxillofacial Surgery
Issue number2
Publication statusPublished - 2022 Jul


  • Chronic maxillary atelectasis
  • chronic rhinosinusitis
  • silent sinus syndrome

ASJC Scopus subject areas

  • Surgery
  • Oral Surgery


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