title: Recurrent basal cell carcinoma after incomplete resection.
abstract: BACKGROUND
  Because the probability of basal cell carcinoma (BCC) recurrence was thought to be 30% to 50%, surgical tradition became not to perform additional resection when the margin was positive.
  
  
  OBJECTIVE
  To determine whether there is an association among age or sex of the patient, anatomic location, histologic type, or reconstructive procedures and the signs and symptoms of the recurrence, interval between incomplete resection and Mohs micrographic surgery (MMS), or extent of MMS resection.
  
  
  METHODS
  During 20 years, all patients with incompletely excised BCC of the head referred for MMS were sequentially prospectively accrued into the cohort.
  
  
  METHODS
  An outpatient MMS practice.
  
  
  METHODS
  Nine hundred ninety-four patients.
  
  
  METHODS
  Interval to tumor recurrence, interval to MMS, and extent of MMS as determined by mean surface area resected, depth of resection, and number of tumor nests.
  
  
  RESULTS
  The interval to signs or symptoms of recurrence and to MMS from incomplete resection was greater for men, patients older than 65 years, those having a tumor on the nose or cheek, those with aggressive or fibrosing BCC, and those who underwent flap reconstruction (P =.001). The extent of MMS resection was greater for those with flap and split-thickness skin graft repairs. The number of tumor nests identified by MMS was significantly greater in those treated with split-thickness skin graft and flap (P =.001).
  
  
  CONCLUSIONS
  Because it is more difficult to control recurrent BCC, treating tumor remaining at the margin of resection in the immediate postoperative period could result in less extensive surgery.
authors.affiliation: Division of Dermatology, Cardinal Bernardin Cancer Center, Loyola University Stritch School of Medicine, 2160 S First Ave, Room 341, Maywood, IL 60153, USA.
authors.forename: J K
authors.initials: JK
authors.lastname: Robinson
authors.forename: S G
authors.initials: SG
authors.lastname: Fisher
mesh_terms: D000367:Age Factors; D000368:Aged; D002280:Basal Cell Carcinoma / Q000473:pathology / Q000601:surgery*; D015331:Cohort Studies; D018572:Disease-Free Survival; D005260:Female; D006258:Head and Neck Neoplasms / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015580:Mohs Surgery; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology / Q000209:etiology / Q000473:pathology*; D011446:Prospective Studies; D012086:Reoperation; D012737:Sex Factors; D012878:Skin Neoplasms / Q000473:pathology / Q000601:surgery*; D013524:Surgical Flaps / Q000706:statistics & numerical data