title: A 4-year-old boy with a yellow bump on his knee.
authors.forename: Robert
authors.initials: R
authors.lastname: Listernick
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D006801:Humans; D006938:Hyperlipoproteinemia Type II / Q000175:diagnosis* / Q000628:therapy; D007719:Knee Joint / Q000473:pathology*; D008297:Male