title: Value of Three-Dimensional Helical CT Image-Guided Planning for Made-to-Order Lumpectomy in Breast Cancer Patients.
abstract: The authors reviewed Niigata Cancer Center Hospital's experience treating patients with lumpectomy to evaluate the utility of three-dimensional helical computed tomography (3D-CT) image-guided made-to-order lumpectomy and determine a positive margin rate. From April 1993 to September 2000, 251 breasts in 248 patients were treated with lumpectomy with a 1 cm macroscopic free margin. In 213 breasts (85%), 3D-CT image-guided made-to-order lumpectomy was performed. Thirty-eight breasts (15%) underwent a lumpectomy without 3D-CT. The lumpectomy specimen was sectioned at 5 mm intervals. Margin status was classified as negative (no invasive or ductal carcinoma in situ (DCIS) within 2 mm from the cut surface) or positive. Positive margins were classified as focally positive (invasive or DCIS transected at the margin within 5 mm or one slide) or massively positive. With 3D-CT image-guided lumpectomy, 21% (45/213) of lesions had a positive margin and 42% (16/38) of lesions without 3D-CT image-guided lumpectomy had a positive margin (p = 0.0055). For lesions with massively positive margins, the rates were 9% (4/45) for 3D-CT image-guided lumpectomy and 38% (6/16) for lumpectomy without 3D-CT (p = 0.0152). 3D-CT image-guided made-to-order lumpectomy decreased the positive surgical margin rate. Among patients with positive margins, those with 3D-CT image-guided lumpectomy have less residual cancer than those without 3D-CT.
authors.affiliation: Division of Diagnostic Radiology, Shizuoka Cancer Center Hospital, Shizuoka, Japan. t.uematsu@scchr.jp
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Uematsu
authors.forename: Muneaki
authors.initials: M
authors.lastname: Sano
authors.forename: Keiichi
authors.initials: K
authors.lastname: Homma
authors.forename: Nobuaki
authors.initials: N
authors.lastname: Sato
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery*; D002173:Cancer Care Facilities; D018270:Carcinoma, Ductal, Breast / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D007564:Japan; D015412:Mastectomy, Segmental / Q000379:methods*; D008499:Medical Records; D008875:Middle Aged; D009367:Neoplasm Staging; D015642:Radiology, Interventional / Q000379:methods / Q000706:statistics & numerical data*; D012189:Retrospective Studies; D025321:Surgery, Computer-Assisted / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods / Q000706:statistics & numerical data*