Imaging features of benign BT in immunocompetent patients compared with those of invasive fungal rhinosinusitis in immunocompromised patients
| Incidental BT in Immunocompetent Patients | Patients with IFRS | |
|---|---|---|
| Enhancement pattern | Nonenhancing centrally with smooth, thin peripheral enhancement, likely normal mucosal enhancement | Infiltrative nonenhancement extending into adjacent structures, without smooth, thin enhancing margin |
| T2 characteristic | Intermediate to hyperintense, but not hypointense | Variable: hypointense, intermediate, or hyperintense |
| Internal feature | Faint septa or confluent dots | Confluent nonenhancement |
| Most common location for BT | Posterior and midportions of inferior turbinate | Middle turbinate |
| NE confined to turbinate? | Yes | No |
| Temporal feature | Increased enhancement with time | Persistent nonenhancement |