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CT scan of the face at age 35 years. A. Axial image shows markedly hypoplastic ethmoid sinuses bilaterally (arrows). The sphenoid sinus is aplastic. Note the hypertelorism. B. Aplasia of frontal sinuses. The hypertelorism is again seen. C. Sagittal midline image again shows aplasia of the frontal and sphenoid sinuses. The laterally placed hypoplastic ethmoid air cells are not visualized on this midline image.
