Case 11-2017 — A 61-Year-Old Woman with Leg Swelling, Back Pain, and Hydronephrosis

A 61-year-old woman presented with a 3-month history of leg swelling and back pain. Imaging revealed a large retroperitoneal mass with hydronephrosis. A diagnostic procedure was performed, and management decisions were made. Presentation of Case Dr. Areej El-Jawahri (Hematology–Oncology): A 61-year-old woman was seen in the emergency department of this hospital because of leg swelling and back pain. The patient had been in her usual health until approximately 3 months before this presentation, when mild swelling of her left leg developed. Three days before this presentation, pain in the back, both flanks, and left leg developed and the leg swelling increased. She came to the emergency department of this hospital. The patient reported no trauma, fevers, night sweats, or weight loss. She had arthritis, asthma, hypercholesterolemia, hypertension, and non–insulin-dependent type 2 diabetes . . .