An 8-year-old male presents presents from the pediatric clinic with painful swelling of the right groin. He had been 
seen also in the clinic by pediatric surgery and he was referred to the ED for further evaluation since the diagnosis could not be made with certainty by clinical examination. The patient has no past medical history and appears nontoxic on examination. The physical examination is only remarkable for the tender, non-fluctuant area in the right groin. You perform a bedside ultrasound and you note the following...
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