title: ["Sand-clock" lithiasis on prostatic transurethral resection bed].
abstract: OBJECTIVE
  Although uncommon, prostatic surgical bed lithiasis may present among post-TURP complications. The present study underscores the importance of diagnosis and treatment.
  
  
  RESULTS
  We report on a patient with magnesium ammonium phosphate hourglass lithiasis in the prostatic surgical bed one year and a half following transurethral resection due to adenomyomatous prostatic hyperplasia that was successfully treated by intracorporeal lithotripsy with the Lithoclast. The physiopathological, clinical, diagnostic and therapeutic aspects are discussed.
  
  
  CONCLUSIONS
  This condition should be suspected in patients with dysuric syndrome post-TURP. The importance of simple complementary diagnostic procedures as DRE and plain abdominal films in discarding lithiasis in underscored. We consider retrograde endoscopic manipulation and ultrasonic lithotripsy or penumatic lithotripsy with the Lithoclast to be the safest procedures for this type of lithiasis.
mesh_terms: D000368:Aged; D002137:Calculi / Q000209:etiology*; D006801:Humans; D008297:Male; D011468:Prostatectomy / Q000009:adverse effects*
vernacular_title: Litiasis en "reloj de arena" sobre celda de resección transuretral prostática.