title: [Analyze the change of bladder tumor cells in irrigating solution after partial cystectomy by 2 microm continuous wave laser].
abstract: OBJECTIVE
  To summarize the change of bladder tumor cells in irrigating solution after partial cystectomy by 2 microm continuous wave laser.
  
  
  METHODS
  From May 2008 to December 2008, a total of 30 patients of bladder cancer, the diameters of tumors from 0.5 to 3.0 cm. The diameter being regarded as the standard, patients were divided into two groups, 10 cases in group A (diameter < 2.0 cm) 20 cases in group B (diameter >or= 2.0 cm). The pre-operative pathologic histology diagnoses of all patients by biopsy were bladder urothelial carcinoma. Partial cystectomy by 2 microm continuous wave laser was given in operation. Due to the patients in group a with smaller tumors, the tumors were washed out of the bladder through the sheath of cystoscope directly. In group B, the larger tumors were cut into blocks by laser in the bladder, and washed out. After removing the tumors and debris, bladder irrigation was performed with about 150 ml solution for 5 times, then irrigating solution was centrifuged and numbered respectively before cellular pathology examination.
  
  
  RESULTS
  In group A, there were no tumor cells but epithelial cells and red blood cells could be seen in 8 cases. In the other 2 cases, a small amount of integrity and shape broken tumor cells could be seen in the No.1 and No.2 piece. There was no tumor cell in No.3, No.4, and No.5 pieces. In group B, tumor cells can be seen in No.1, No.2 and No.3 pieces in 14 cases, but cell density decreased gradually. There was no tumor cell in No.4, No.5 pieces, and tumor cells can be seen in No.1 to No.4 pieces for another 6 cases, and cell density also decreased gradually, there was no tumor cell in No.5 piece.
  
  
  CONCLUSIONS
  After the surgery, 5 times of bladder irrigation in all cases of partial cystectomy by 2 microm continuous wave laser can reduce the remnants of the bladder tumor cells effectively.
authors.affiliation: Department of Urology, the General Hospital of People's Liberation Army, Beijing 100853, China.
authors.forename: Zhi-tao
authors.initials: ZT
authors.lastname: Wei
authors.forename: Yong
authors.initials: Y
authors.lastname: Yang
authors.forename: Bao-fa
authors.initials: BF
authors.lastname: Hong
authors.forename: Dong-chong
authors.initials: DC
authors.lastname: Sun
authors.forename: Peng
authors.initials: P
authors.lastname: Zhang
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D053685:Laser Therapy / Q000379:methods; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D012189:Retrospective Studies; D007507:Therapeutic Irrigation; D016896:Treatment Outcome; D001743:Urinary Bladder / Q000473:pathology*; D001749:Urinary Bladder Neoplasms / Q000473:pathology* / Q000601:surgery