Painful oral ulcers with a nose lesion

A 77-year-old Chinese woman presents with a crusted lesion on the bridge of her nose for the past two months.
She has associated painful oral ulcers. She is otherwise well, has no significant past medical history and takes no regular medications.
On examination, you note the nasal lesion and erosions on the hard palate (both pictured). Examination is otherwise unremarkable.
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