title: [Relationship between morcellation efficiency and enucleated tissue weight in holmium laser enucleation of the prostate (HoLEP) for patients with benign prostatic hyperplasia].
abstract: OBJECTIVE
  We examined the relationship between morcellation efficiency and enucleated tissue weight in holmium laser enucleation of the prostate (HoLEP) for patients with benign prostatic hyperplasia (BPH) retrospectively.
  
  
  METHODS
  From January to December 2010, 140 patients with BPH were treated by HoLEP combined with mechanical morcellation with up side down technique by a single surgeon.
  
  
  RESULTS
  The mean age was 70.6 years, and the mean enucleated tissue weight was 46.8 g. The mean morcellation time was 9.9 min, and the mean rate of morcellation was 6.7 g/min. No complications were reported relating to morcellation such as bladder injury. Although morcellation time and enucleated tissue weigh were proportionally related (Estimate equation: Y = - 1.186 + 0.813 * X, R^2: 0.814), larger glands with more than 80 g of tissue enucleated did not match this distribution map. Five cases with more than 100 g of enucleated tissue weight required much longer operation time (range 66-90 min) and were disproportioned to tissue weight. Morcellation efficiency tended to decrease when enucleated tissue weight exceeds 80 g and less than average in almost all cases. Morcellation efficiency significantly worsen when enucleated tissue weight exceeds more than 100 g.
  
  
  CONCLUSIONS
  Morcellation efficency may decrease in larger gland exceeds 80 g.
authors.affiliation: Department of Urology, Fuchinobe General Hospital.
authors.forename: Ryuta
authors.initials: R
authors.lastname: Ishikawa
authors.forename: Toshiya
authors.initials: T
authors.lastname: Shitara
authors.forename: Yoji
authors.initials: Y
authors.lastname: Wakatabe
authors.forename: Seiichi
authors.initials: S
authors.lastname: Kubo
authors.forename: Takahiro
authors.initials: T
authors.lastname: Hirayama
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Fujita
authors.forename: Masatsugu
authors.initials: M
authors.lastname: Iwamura
authors.forename: Shiro
authors.initials: S
authors.lastname: Baba
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D053844:Lasers, Solid-State / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D011467:Prostate / Q000473:pathology; D011468:Prostatectomy / Q000379:methods*; D011470:Prostatic Hyperplasia / Q000473:pathology / Q000601:surgery*; D012189:Retrospective Studies