In 1948 Ormond reported two cases of unheralded anuria due to idiopathic retroperitoneal fibrosis. Previous documentation of the condition had been scanty, but since then over a hundred similar cases have been reported. The patient, usually an adult, at first has only vague symptoms such as abdominal discomfort, anorexia, loss of weight, or nausea. The diagnosis is made usually only when signs ...