**8. Investigations**

## **8.1 Biopsy**

Though for any nasal mass, golden rule is that biopsy is preceded by radiological imaging to ascertain origin, extent, and nature of the disease; in vascular tumors such as JNAs, biopsy is contraindicated. Risk of bleeding during and/ or after the procedure outweighs any added advantage we may get out of preoperative biopsy.
