What is ent surgeon graveyard?

What is ent surgeon graveyard?

Tonsillolingual sulcus

Gingivobuccal sulcus(m/c)

Fossa of rossenmuller

Pyriform fossa.

Retromolar trigone

Posterior one third of tongue.

All these are coffin corners or grave yard because many a time primary are missed from these regions.

The tonsillolingual sulcus is known as graveyard as carcinoma is often missed here

Manisha Sinha Budhiraja mam apart from tonsillolingual sulcus Does

Fossa of rossenmuller

Pyriform fossa.

Retromolar trigone

Posterior one third of tongue.

Are also known as graveyard ??