Normal anatomic variation: a never ending saga.
Keats
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D003657:Decision Making; D003937:Diagnosis, Differential; D003952:Diagnostic Imaging; D006801:Humans; D016658:Psoas Muscles / Q000002:abnormalities / Q000033:anatomy & histology*; D013977:Tibia / Q000002:abnormalities / Q000033:anatomy & histology*