**2.5 Tumors of the paranasal sinuses and nose**

Paranasal sinuses and nose tumors may also require exenteration in case they extend to the orbital apex, complete thickness invasion through periorbita into posterior orbital fat, extension into the extraocular muscles and invasion of the bulbar conjunctiva or sclera.

### **2.6 Lacrimal sac tumors**

Invasive neoplasms arising lacrimal sac like squamous cell, adenoid cystic carcinoma with infiltration into the orbit is an indication for orbital exenteration.

## **2.7 Invasive fungal infection**

Uncontrolled invasive fungal infection like invasive aspergillosis or Mucor mycosis may need orbital exenteration for control.
