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. 2021 Oct 30;17:343. doi: 10.1186/s12917-021-03048-9

Fig. 9.

Fig. 9

Left sinonasal endoscopic views of continuous follow up examinations. a Removal of a conchal bone sequestrum (asterisk) at the medial aspect of the ventral concha (VC) using endoscopic forceps. The subjacent mucosa shows some irregularities (arrowhead), which may be sign of early granulation. Arrows indicate focal purulent membranous deposits on the nasal septum (NS). b Mucopurulent secretions (asterisks) in the rostral entrance part to the ventral conchal recess and c, in the caudal ventral conchal recess. d Former severely necrotic medial aspect of the VC exhibiting granulation (dotted rim). e Area of the rostral nasomaxillary aperture showing little seromucous secretion deposit (arrowheads) around a polypoid VC deformation (asterisk). L, lateral (maxillary) mucosa. f Small amounts of seromucous secretion (arrowhead) in the caudal ventral conchal sinus