Fig. 5
Classic appearance of the “black turbinate” sign. Unenhanced coronal T1W image (a) reveals intermediate signal contents within the right nasal cavity (dotted arrow) and hypertrophy of the right inferior turbinate (thick arrow). Corresponding CE fat-suppressed (FS) coronal T1W image (b) reveals poor enhancement of the right middle (thin arrow) and inferior turbinates (thick arrow) due to necrosis, resulting in the “black turbinate” sign. Post-operative histopathology analysis (c), using HE staining, demonstrates necrosis of the turbinate (*) and branching, aseptate fungal hyphae (thick arrow) consistent with the diagnosis of MCR