Fig. 2From: Diabetic ketoacidosis and coronavirus disease 2019-associated mucormycosis: a case reportEndoscopic view of the right nasal cavity. Avascular fibrinous conversion of the superior turbinate (St) extends to the level of the anterior skull base (Sb) without classic black necrotic eschar typically visualized with invasive fungal sinusitis. Left picture shows a superior endoscopic view of the right nasal cavity (left picture). Septum—Sp; middle turbinate—Mt; superior turbinate attachment at the anterior skull base—Sb; septum—sp; middle turbinate—MtBack to article page