title: A retired postal worker with back pain and leg weakness.
abstract: A 61-year-old former postal worker presented with progressive pain in his lower back, weakness in his right leg, and numbness in his left foot. In recent weeks, he had dragged his right leg in order to walk. He had also had intermittent diarrhea and dysuria but no hematuria or weight loss.
authors.affiliation: Department of Internal Medicine, University of South Florida College of Medicine, Tampa, USA.
authors.forename: D T
authors.initials: DT
authors.lastname: Parnassa
authors.forename: G
authors.initials: G
authors.lastname: Matfin
authors.forename: H M
authors.initials: HM
authors.lastname: Adelman
mesh_terms: D001416:Back Pain / Q000150:complications* / Q000000981:diagnostic imaging; D002813:Chondrosarcoma / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D007866:Leg; D008297:Male; D008875:Middle Aged; D009069:Movement Disorders / Q000000981:diagnostic imaging / Q000209:etiology*; D010386:Pelvic Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D011859:Radiography