[Radiological case of the month].
D002675:Child, Preschool; D005260:Female; D006801:Humans; D008067:Lipoma / Q000000981:diagnostic imaging*; D011860:Radiography, Abdominal; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging*; D014463:Ultrasonography
Cas radiologique du mois.