Task: Question Answering
Input (English): Question: Question linked to the image nº9 11-year-old boy who attends because 10 days ago he has a daily fever of predominance in the evening. In the last 2 days the fever has been increasing (up to 38.5º C). Has little appetite and has lost weight (2 kg). Three weeks ago he was kicked in the right knee. Although initially he only had pain later he noticed inflammation, which was increasing until it prevented him from walking. Analytical: elevation of PCR (75 mg / L) without other significant alterations. Simple radiology is shown. Which of the following is the most likely diagnosis? 
 Options:  <1> Osteomyelitis. <2> Ossifying myositis <3> Eosinophilic granuloma. <4> Osteosarcoma. <5> Osteoblastoma
Output (English): 4