RT Journal A1 Schwartz LM, Woloshin S, Welch H T1 NOt so silver lining JF Archives of Internal Medicine JO Archives of Internal Medicine YR 2011 FD March 28 VO 171 IS 6 SP 489 OP 490 DO 10.1001/archinternmed.2011.73 UL http://dx.doi.org/10.1001/archinternmed.2011.73 AB Imagine your patient undergoes a computed tomographic (CT) scan for low back pain. The spine looks fine, but the scan picks up a totally unexpected kidney mass. It is suggestive of cancer. The patient is hospitalized for 4 days and undergoes a partial nephrectomy. He feels like he was hit by a truck. And the tumor? Not cancer. It was a case of mistaken identity.