<unk>  or Ormond's disease is a disease featuring the proliferation of fibrous tissue in the retroperitoneum, the compartment of the body containing the kidneys, aorta, renal tract, and various other structures. It may present with lower back pain, kidney failure, hypertension, deep vein thrombosis, and other obstructive symptoms. It is named after John Kelso Ormond, who rediscovered the condition in 1948.
Retroperitoneal fibrosis
Perineal tear
Cervical effacement
Perineal hernia
Encapsulating peritoneal sclerosis
Accessory pancreas
Ileosigmoid knot
Cyst