To the Editor.—We were surprised to read in the November Archives that Som et al1 were unable to find any previously reported cases of pneumocele of the sphenoid sinus. We were also surprised that they did not mention pneumocele of the frontal sinus, a condition that was reviewed as a well-recognized entity many years ago.2
A patient with pneumocele of the sphenoid sinus was seen in our department and the case reported in detail ten years ago.3 The pneumocele manifested as a persistent, painless swelling of the forehead following an acute, painful episode five months previously. Because of a communication between the frontal and sphenoidal sinuses, the sphenoid sinus was also expanded, giving rise to a combined frontal-sphenoidal pneumocele. The roentgenographic appearances of the sphenoid sinus were similar to those described in the article by Som et al, although the pathogenesis was different. Surgery was curative.
SELLARS SL, MORTON RP. Sphenoid Sinus Pneumocele. Arch Otolaryngol. 1984;110(10):697. doi:10.1001/archotol.1984.00800360069019
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