title: Retroperitoneal lymphangioma: an unusual cause of the acute surgical abdomen.
mesh_terms: D002648:Child; D002675:Child, Preschool; D006801:Humans; D008202:Lymphangioma / Q000175:diagnosis* / Q000601:surgery; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000601:surgery