Mucormycosis after COVID-19 in a patient with diabetes

On examination his temperature was 37°C, pulse was 84 beats per min, blood pressure was 118/82 mm Hg, and respiratory rate was 16 breaths per min; pulse oximetry showed an oxygen saturation of 96% on room air. Laboratory investigations showed a random blood sugar concentration of 298 mg/dL (normal 140 or below), glycated haemoglobin A1c of 9·8% (normal 4–5·6), arterial blood pH 7·4 (normal 7·35–7·45), serum bicarbonate concentration 24 mEq/L (normal 23–30), and a mild neutropenia (1510 neutrophils per μL; normal 1800–6300). Contiguous extension of non-enhancing soft tissue into the left middle and ethmoidal air cells, with a breach in the cribriform plate to involve the basal frontal region was noted (figure).