frontal sinus造句怎么写

The situation of frontal sinus ostium and frontal recess was as follows:89 sides(39.3%) obstructed by swollen mucosa, polypoid mucosa or poly ps, no cell obstruction at frontal sinus orifice;

septum of frontal sinus

Conclusion Appropriate treatment aimed at different frontal sinusitis in degree and in period when it occurred after transfrontal craniotomy is a reasonable maneuver.