title: Gross hematuria: a complication of intrapelvic cement intrusion in total hip replacement.
abstract: Four patients with gross hematuria and dysuria following intrusion of methylmethacrylate into the pelvic cavity after total hip replacement are described. This is a rare, benign complication which generally occurs 7-14 days after surgery and subsides promptly with symptomatic treatment. The diagnosis can be made on a simple radiography of the pelvis which shows the radiopaque cement as a mass intruding with the pelvic cavity. On the urogram it frequently abuts against or produces an extrinsic impression on the urinary bladder. This complication is very likely a result of the exothermal reaction during polymerization of the methylmethacrylate.
mesh_terms: D000368:Aged; D001178:Arthroplasty; D005260:Female; D006417:Hematuria / Q000209:etiology*; D006621:Hip Joint / Q000601:surgery*; D006801:Humans; D007595:Joint Prosthesis; D008297:Male; D008768:Methylmethacrylates / Q000009:adverse effects*; D008875:Middle Aged; D010388:Pelvis / Q000000981:diagnostic imaging*; D011108:Polymers / Q000009:adverse effects; D011183:Postoperative Complications; D011859:Radiography; D001743:Urinary Bladder / Q000000981:diagnostic imaging; D014555:Urination Disorders / Q000209:etiology
chemical_list: D008768:Methylmethacrylates; D011108:Polymers