[Silent sinus syndrome associated with intrasinusal ossification]

Area of Science:

• Otolaryngology
• Ophthalmology
• Plastic Surgery

Background:

• Silent Sinus Syndrome (SSS) is a rare condition causing diplopia and facial asymmetry, typically due to maxillary sinus atelectasis from ostiomeatal obstruction.
• Surgical interventions on the maxillary sinus lining can lead to bone formation and sinus auto-obliteration.

Observation:

• A 45-year-old female presented with vertical diplopia, enophthalmos, and left cheekbone depression six months post-antrostomy for sinusitis.
• CT imaging revealed significant collapse of the left maxillary sinus, orbital volume expansion, and de novo ossification of the sinus over two years.

Findings:

• The study reports the first association of Silent Sinus Syndrome with intraluminal maxillary sinus osteogenesis.
• The observed ossification was characterized as normal lamellar bone.
• The patient's diplopia resolved after orbital floor reconstruction.

Implications:

• This case suggests that inadequate antrostomy or peroperative dissection may contribute to SSS and subsequent sinus ossification.
• Understanding this association is crucial for managing complications after maxillary sinus surgery.
• Further research is needed to elucidate the mechanisms linking SSS and de novo bone formation.