title: Significant reduction of hypertrophic scarring by lateral vertical incision in skin-sparing and nipple-sparing mastectomy.
abstract: BACKGROUND
  Some kinds of incisions have been reported in skin- or nipple-sparing mastectomy, but few reports have described the advantages and disadvantages of each incision. This study was conducted to compare the lateral horizontal incision with the lateral vertical incision in both mastectomies, in terms of hypertrophic scarring, breast envelope necrosis, nipple-areola necrosis.
  
  
  METHODS
  We performed a retrospective analysis of patients who underwent skin- or nipple-sparing mastectomy using lateral horizontal or lateral vertical incisions with immediate breast reconstruction. All data were obtained retrospectively from databases, operation records and postoperative pictures. We compared the frequency of hypertrophic scarring and breast envelope necrosis between lateral horizontal and lateral vertical incision groups by using Pearson's chi-square test. For nipple-sparing mastectomy, we also investigated nipple-areola necrosis.
  
  
  CONCLUSIONS
  One hundred fifty cases were analyzed and identified as 89 lateral horizontal incision cases and 61 lateral vertical incision cases. Mastectomy comprised SSM in 49 cases and NSM in 101 cases. Hypertrophic scarring was significantly less frequent with lateral vertical incisions (1.6%) than with lateral horizontal incisions (14.6%) (P =0.007). No significant differences were seen in terms of breast envelope necrosis, nipple-areolar necrosis.
authors.affiliation: 6th-year student, Tokyo Medical and Dental University.
authors.forename: Naofumi
authors.initials: N
authors.lastname: Kamioka
authors.forename: Hiroki
authors.initials: H
authors.lastname: Mori
authors.forename: Mutsumi
authors.initials: M
authors.lastname: Okazaki
mesh_terms: D000328:Adult; D018427:Breast Implants; D017439:Cicatrix, Hypertrophic / Q000517:prevention & control*; D062109:Dermatologic Surgical Procedures / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016462:Mammaplasty / Q000379:methods; D008408:Mastectomy / Q000379:methods*; D008875:Middle Aged; D064827:Myocutaneous Flap / Q000637:transplantation; D009336:Necrosis; D009558:Nipples / Q000601:surgery*; D059351:Organ Sparing Treatments / Q000379:methods; D061525:Perforator Flap / Q000637:transplantation; D011183:Postoperative Complications / Q000517:prevention & control; D012189:Retrospective Studies; D015625:Tissue Expansion Devices