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Characteristics of 637 Melanomas Documented by 27 General Practitioners on the Skin Cancer Audit Research Database Publisher Pubmed



Jimenez Balcells C1 ; Hay J2 ; Keir J3 ; Rosendahl N4 ; Coetzerbotha M3 ; Wilson T5 ; Clark S4, 6, 7 ; Baade A8 ; Becker C9, 10 ; Bookallil L11 ; Clifopoulos C3 ; Dicker T3 ; Denby MP12 ; Duthie D13 Show All Authors
Authors
  1. Jimenez Balcells C1
  2. Hay J2
  3. Keir J3
  4. Rosendahl N4
  5. Coetzerbotha M3
  6. Wilson T5
  7. Clark S4, 6, 7
  8. Baade A8
  9. Becker C9, 10
  10. Bookallil L11
  11. Clifopoulos C3
  12. Dicker T3
  13. Denby MP12
  14. Duthie D13
  15. Elliott C14
  16. Fishburn P3
  17. Foley M15
  18. Franck M16
  19. Giam I17
  20. Gordillo P18
  21. Lilleyman A19
  22. Macauley R20
  23. Maher J21
  24. Mcphee E22
  25. Reid M23
  26. Shirlaw B24
  27. Siggs G25
  28. Spark R26
  29. Stretch J27
  30. Van Den Heever K28
  31. Van Rensburg T29
  32. Watson C30
  33. Kittler H31
  34. Rosendahl C3, 6
Show Affiliations
Authors Affiliations
  1. 1. 4D Skin Cancer Clinic, Belmont North, NSW, Australia
  2. 2. Upper Hutt Skin Clinic, Upper Hutt, Wellington, New Zealand
  3. 3. Primary Care Clinical Unit, Faculty of Medicine, The University of Queensland, Herston, QLD, Australia
  4. 4. Faculty of Medicine, The University of Queensland, Herston, QLD, Australia
  5. 5. SCARD, Brisbane, QLD, Australia
  6. 6. Tehran University of Medical Sciences, Tehran, Iran
  7. 7. Douglas Hanly Moir Pathology, Macquarie Park, NSW, Australia
  8. 8. Gladstone GP Superclinic, Gladstone, QLD, Australia
  9. 9. Wairarapa Skin Clinic, Masterton, New Zealand
  10. 10. Wairarapa Hospital, Lansdowne, Masterton, New Zealand
  11. 11. The University of New England, Armidale, NSW, Australia
  12. 12. Silverdale Medical, Silverdale, Auckland, New Zealand
  13. 13. Darwin Skin Cancer Clinic, Parap, NT, Australia
  14. 14. Solarderm Skin Cancer Practice, Caboolture, QLD, Australia
  15. 15. The Skin Clinic, Marlborough – Blenheim, New Zealand
  16. 16. MoleSafe Skin Cancer Clinic, Windsor, VIC, Australia
  17. 17. Skin2 Clinic, Deakin, ACT, Australia
  18. 18. Cairns Skin Cancer Clinic, Cairns, QLD, Australia
  19. 19. Newcastle Skin Check, Charlestown, NSW, Australia
  20. 20. Bateau Bay Medical Centre, Bateau Bay, NSW, Australia
  21. 21. Skin Cancer Ballarat, Alfredton, VIC, Australia
  22. 22. Emerald Medical Group, Emerald, QLD, Australia
  23. 23. Nelson Bay Skin Cancer Clinic, Nelson Bay, NSW, Australia
  24. 24. Lakeside Medical, Springfield Lakes, QLD, Australia
  25. 25. Regency Medical Clinic, Sefton Park, SA, Australia
  26. 26. Toukley Family Practice, Toukley, NSW, Australia
  27. 27. Bond University, Robina, QLD, Australia
  28. 28. CQ Skin Cancer Clinic, Bucasia, QLD, Australia
  29. 29. Kippax Ochre Medical Centre, Holt, ACT, Australia
  30. 30. Brisbane City Doctors, Brisbane, QLD, Australia
  31. 31. Vienna Dermatologic Imaging Research Group, Department of Dermatology, Medical University of Vienna, Vienna, Austria

Source: Australasian Journal of Dermatology Published:2021


Abstract

Background and Objective: Most melanomas (including melanomas in situ), in Australasia, are treated by general practitioners (GPs). Previously undescribed, the characteristics of a series of melanomas treated by multiple GPs are examined. Patients and Methods: Six hundred and thirty-seven melanomas treated by 27 Australasian GPs during 2013 and documented on the Skin Cancer Audit Research Database (SCARD) were analysed by anatomical site, subtype, Breslow thickness, diameter, associated naevi and linked adverse outcomes. Results: Most melanomas (59.7%) were on males, mean age at diagnosis being 62.7 years (range 18–96). Most (65.0%) were in situ, with a high incidence of lentiginous melanoma (LM) (38.8%) and 32% were naevus associated. Most LM (86.4%) were in situ, compared to 55% of superficial spreading melanoma (SSM) (P < 0.0001). There was male predominance on the head, neck and trunk and female predominance on extremities. There was no significant association between Breslow thickness and diameter, with small melanomas as likely to be thick as large melanomas, and melanomas ≤3 mm diameter, on average, more likely to be invasive than larger melanomas. There was a positive correlation between age and both melanoma diameter and Breslow thickness. Seven cases progressed to melanoma-specific death: Five nodular melanoma (NM) and two SSM, one of which was thin (Breslow thickness 0.5 mm). Conclusions: A large series of melanomas treated by Australasian GPs were predominantly in situ, with a high proportion of LM subtype. With implications for GP training, NM linked to death was over-represented and there was a novel finding that older patients had larger diameter melanomas. © 2021 The Australasian College of Dermatologists
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