Sinusitis frontalis

Concha

bullosa mucocele with orbital invasion and secondary frontal sinusitis: a case report. Preoperative magnetic resonance (MR) images of the paranasal sinus. MR images show a huge cystic mass displaying intermediate signal intensity on T1 axial (A), T2 axial (B), and T2 coronal images (C). Post-contrast T1 mage (D) show no enhancement of the cystic mass. Right ethmoidal sinusitis is noted (asterisk).