<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, renal failure, hypertension, deep vein thrombosis and other obstructive symptoms.
Retroperitoneal fibrosis
Retroperitoneal abscess
Misty mesentery
Perineal tear
Retroperitoneal hematoma
Accessory pancreas
Scrotal masses
Urogenital folds