A 60-year-old man reported to the emergency department with an unpleasant looking and painful lesion on the neck. He had first become aware of something unusual on the neck 5 days ago which became progressively more swollen and sore, now discharging pus. What kind of lesion is it and what is its causative organism?

What could be the major underlying etiology? *This image-based content is from Docplexus editorial team for educative purpose only. Source: Clinical cases uncovered-Surgery   Stay connected, the answer will be posted soon!