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Figure 6b. Acute invasive fungal sinusitis due to zygomycosis in a 57-year-old diabetic man. (a) Axial contrast-enhanced CT scan shows increased attenuation in the left anterior and posterior ethmoid air cells with destruction of the medial wall of the left orbit (arrow). (b) Coronal contrast-enhanced CT scan shows a subperiosteal abscess occupying the inferomedial aspect of the left orbit and displacing the medial and inferior rectus muscles laterally (arrows). Note also the destruction of the orbital floor (arrowhead) and the increased attenuation in the adjacent left maxillary sinus.
