[Silent sinus syndrome associated with intrasinusal ossification].
BACKGROUND
The silent sinus syndrome (SSS) is a rare cause of diplopia and facial asymmetry. It is commonly attributed to a sinus atelectasis secondary to ostiomeatal obstruction. Surgical dissection of the maxillary sinus mucosal lining is known to cause auto-obliteration by bone formation.


METHODS
A 45 year-old female patient was referred for vertical diplopia with enophthalmia, and a slight depression of the left cheekbone. Antrostomy was performed for chronic obstructive maxillary sinusitis six months before. CT scan revealed a major collapse of superior, anterior, and posterior left maxillary sinus with expansion of the orbital volume. The de novo maxillary sinus ossification evolved over two years of follow-up. It was normal lamellar bone. The left orbital floor was rebuilt. Diplopia progressively resolved.


CONCLUSIONS
The association of SSS and intraluminal osteogenesis has never been reported. The first might be due to a peroperative dissection of the maxillary sinus mucosal lining. SSS was due to meatal obstruction secondary to inadequate antrostomy.
Service de chirurgie maxillofaciale et stomatologie, CHU Hôtel-Dieu, 1, place Alexis-Ricordeau, 44000 Nantes, France. roman.khonsari@kcl.ac.uk
R-H
RH
Khonsari
B
B
Sadoughi
A
A
Rouger
M
M
Gayet-Delacroix
C
C
Ferron
P
P
Corre
D002908:Chronic Disease; D004172:Diplopia / Q000209:etiology; D015841:Enophthalmos / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008443:Maxillary Sinus / Q000473:pathology*; D015523:Maxillary Sinusitis / Q000601:surgery; D008875:Middle Aged; D009092:Mucous Membrane / Q000601:surgery; D009915:Orbit / Q000601:surgery; D009999:Ossification, Heterotopic / Q000209:etiology*; D010254:Paranasal Sinus Diseases / Q000209:etiology*; D011183:Postoperative Complications; D013577:Syndrome; D014057:Tomography, X-Ray Computed