A 56-year-old male with PMH of chronic alcoholism and Hepatitis C presents to the ED with 2 days of right hand pain. Pt states he is not sure what happened. He 
remembers being in an altercation and being pushed down several steps. He adds that he is concerned that he was bit because the assailant had bitten him on his back last year during a fight. His vital signs are stable. His plain radiographs are negative for fracture or ROFB. His labs are normal with the exception of an elevated CRP and ESR. On examination, fusiform swelling of the right ring finger is noted with a wound note proximally. He is holding his finger in a preferred flexed position and is unable to completely straighten his finger. You consult the hand service due to your concern of a flexor tenosynovitis. The hand fellow forcibly straightens out the finger and states: "See this is just a simple cellulitis. Admit the patient to medicine." You perform a focused ultrasound and note the following:
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