title: [Intermittent flank pain].
abstract: Flank pain is a common problem that can be caused by a variety of abnormalities. In this case report we describe two patients with intermittent flank pain with an unusual cause: intermittent ureteropelvic junction obstruction due to crossing of accessory renal vessels. Instant imaging at the time when the symptoms occur seems the best way to prevent delays in diagnosis and treatment.
authors.affiliation: Westfriesgasthuis, afd. Chirurgie, Hoorn. a.beganovic@westfriesgasthuis.nl
authors.forename: A
authors.initials: A
authors.lastname: Beganović
authors.forename: B P J
authors.initials: BP
authors.lastname: van Bezooijen
authors.forename: B G F
authors.initials: BG
authors.lastname: Heggelman
authors.forename: N P H
authors.initials: NP
authors.lastname: van Adrichem
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery; D010388:Pelvis; D011859:Radiography; D012077:Renal Artery / Q000002:abnormalities* / Q000601:surgery; D012082:Renal Veins / Q000002:abnormalities* / Q000601:surgery; D016896:Treatment Outcome; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery