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NBME 21 Answers

nbme21/Block 4/Question#5

An 11-year-old boy has had persistent pain in his ...

Lung

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 +13  upvote downvote
submitted by jambo2222(13),

It’s an osteosarcoma. Sarcoma = hematogenous mets. It’s in the legs so think how a DVT goes to lung. Same idea.

tinydoc  Perfect way to remember it. Thank you! +  
chandlerbas  Iused the mnemonic PB (lead) KeTtLe....looking at the stem it said "osteolytic mass" meaning that it has to be either Breast, Kidney, thyroid or lungs. none of the rest are options leaving lungs. but jambo2222 very noiice that works too! +  




 +1  upvote downvote
submitted by cellgamesgojan(17),

Jambo is right. I was reading through Goljan Rapid Review and he states that the lungs are the most common site of metastasis for osteosarcoma.