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Tomography in the diagnosis of sphenoid sinus mucocele (SSM).

Mucocele of the sphenoid sinus is a potentially serious lesion because it is often misdiagnosed and operated on as a pituitary tumor, thereby increasing the morbidity and mortality.Tomography is of great importance in the diagnosis, revealing a sharply marginated soft-tissue mass with destruction of the floor of the sella turcica as the predominant finding.Once the benignity of the lesion is established, it may be properly treated by a transnasal approach.