79-year-old male presents with a painful lesion on the gingiva #9 of one month.

History of the lesion:

  • Lesion has grown over a few years.

Oral examination:

  • 2 x 0.8 cm well defined ulceroproliferative nodule with rolled out margin and partly covered by yellow pseudomembrane on the facial gingival margin of #9.
The differential diagnosis includes (choose 2):

What is the next course of action?

Histology of the lesion is as shown. What is your diagnosis?

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