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. 2021 Nov 3;51(1):112–120. doi: 10.1067/j.cpradiol.2021.09.004

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FIG 4: — Black Turbinate sign in 2 patients on coronal postcontrast T1W images with rhino-orbital-cerebral mucormycosis. (A) Image showing “black turbinate sign” with non-enhancing left middle and part of inferior turbinate (white asterix) and non-enhancing left maxillary sinus mucosa. Note the normal enhancing nasal turbinates on the right side (black asterix). (B) Image showing bilateral non enhancing nasal turbinates and nasal mucosa (bilateral ”black-turbinate” & “black-mucosa” sign).