title: Mohs micrographic surgery of rare cutaneous tumours.
abstract: BACKGROUND
  Recurrence rates after Mohs micrographic surgery (MMS) for rare cutaneous tumours are poorly defined.
  
  
  OBJECTIVE
  To investigate the recurrence rate after MMS for rare cutaneous tumours at a university centre.
  
  
  METHODS
  Retrospective review of all rare cutaneous tumours treated with MMS at a large university centre between January 2008 and December 2012. To detect all recurrences, patients were linked to The Nationwide Network and registry of histo- and cytopathology (PALGA).
  
  
  RESULTS
  In total, 80 patients with 80 tumours were included. Tumour types included dermatofibrosarcoma protuberans (27), atypical fibroxanthoma (22), Merkel cell carcinoma (8), microcystic adnexal carcinoma (9), sebaceous carcinoma (6), extramammary Paget's disease (2) and other (6). Mean follow-up time was 3.7 years (standard deviation 1.4) during which two atypical fibroxanthomas recurred (2.5%).
  
  
  CONCLUSIONS
  This large case series shows that MMS is an appropriate treatment for rare cutaneous tumours with a recurrence rate less than 3%. Preferably, MMS for rare cutaneous tumours is performed in experienced multidisciplinary centres to further improve the quality of treatment.
authors.affiliation: Department of Dermatology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands.
authors.forename: S C
authors.initials: SC
authors.lastname: Flohil
authors.affiliation: Department of Dermatology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands.
authors.forename: C B
authors.initials: CB
authors.lastname: van Lee
authors.affiliation: Department of Dermatology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands.
authors.forename: J
authors.initials: J
authors.lastname: Beisenherz
authors.affiliation: Department of Plastic and Reconstructive Surgery, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands.
authors.forename: M A M
authors.initials: MAM
authors.lastname: Mureau
authors.affiliation: PALGA, The Nationwide Network and Registry of Histo- and Cytopathology, Houten, The Netherlands.
authors.forename: L I H
authors.initials: LIH
authors.lastname: Overbeek
authors.affiliation: Department of Dermatology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands.
authors.forename: T
authors.initials: T
authors.lastname: Nijsten
authors.affiliation: Department of Dermatology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, The Netherlands.
authors.forename: R R
authors.initials: RR
authors.lastname: van den Bos
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D015580:Mohs Surgery / Q000379:methods*; D009364:Neoplasm Recurrence, Local; D035583:Rare Diseases; D012189:Retrospective Studies; D012878:Skin Neoplasms / Q000145:classification / Q000601:surgery*