What is this neck mass? A 47-yo India-born male with chronic hep C, hepatocellular carcinoma, on tacrolimus and steroids s/p liver transplant, presents with fever, left lower lobe consolidation, pleural effusion. Ten days later, a submandibular mass developed.

A 53-yo man noted an itchy, red rash on his ankle after a trip to Brazil. He was bitten while on a beach and covered the bite with a bandage. The bite mark extended itself 1 cm to 2 cm per day in a serpiginous pattern. He was otherwise well. What is it?