title: Uriniferous perirenal pseudocyst. An unusual cause of a calcified abdominal mass in the neonate.
abstract: Radiologically visible calcification in the wall of a uriniferous perirenal pseudocyst is rare. This unusual finding was seen in a newborn infant who was found to have a left flank mass on the first day of life. When perirenal pseudocysts occur in infants, they are usually caused by congenital obstructive lesions of the urinary tract.
mesh_terms: D003560:Cysts / Q000000981:diagnostic imaging*; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000000981:diagnostic imaging*; D007674:Kidney Diseases / Q000000981:diagnostic imaging*; D014545:Urinary Calculi / Q000000981:diagnostic imaging*; D014556:Urine; D014567:Urography