Garudapurana 1.171.1

1.171.1

śrīgaruḍamahāpurāṇam- 171
dhanvantariruvāca /
nāḍīvraṇādirogāṇāṃ cikitsāṃ śṛṇu suśruta /
nāḍīṃ śastreṇa saṃpāṭya nājīnāṃ vraṇavatkriyā //

The glorious Garuḍa Mahāpurāṇa — [Chapter] 171.
Dhanvantari said:
Listen, Suśruta, to the treatment of sinus ulcers and other diseases.
After slitting the sinus open with a surgical instrument, the procedure for sinuses is like that for an ulcer.