PMC6339757_01
(a, b) Axial and sagittal cuts of a paranasal CT scan showing cylindrical foreign body, in the left nasal fossa and ethmoid sinus; (c, d) coronal and sagittal CT scans 6 months after FESS, with removal of the foreign body.
CRIOT2019-4386938.001.jpg
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fig1
Also, signs of chronic inflammation were observed, with thickening of the right frontal sinus mucosa, the ethmoidal cells, the sphenoid and the maxillary sinuses, associated with sclerotic osteitis of the bone walls that delimit the maxillary and sphenoidal sinuses" (Figure 1).