Characteristics, Treatment and Outcomes of 589 Melanoma Patients Documented by 27 General Practitioners on the Skin Cancer Audit Research Database Publisher Pubmed



Hay J¹ ; Keir J² ; Jimenez Balcells C³ ; Rosendahl N⁴ ; Coetzerbotha M² ; Wilson T⁵ ; Clark S^{4, 6} ; Baade A⁷ ; Becker C^{8, 9} ; Bookallil L¹⁰ ; Clifopoulos C² ; Dicker T² ; Denby MP¹¹ ; Duthie D¹² Show All Authors
Source: Australasian Journal of Dermatology Published:2022

Abstract

Background and objective: General practitioners manage more melanomas than dermatologists or surgeons in Australia. Previously undescribed, the management and outcomes of melanoma patients treated by multiple Australasian general practitioners are examined. Methods: The characteristics, management and outcomes of 589 melanoma patients, managed by 27 Australasian general practitioners and documented on the Skin Cancer Audit Research Database (SCARD), were analysed. Results: Most patients (58.9%) were males with mean age at diagnosis of 62.7 years (range 18–96), and most melanomas were in situ or thin-invasive. Patients aged under 40 years had fewer melanomas, but a higher proportion (the majority) were invasive, compared with older patients (P < 0.0001). Most (55.9%) melanomas were diagnosed following elliptical excision biopsy, the rate of unintended involved margins being eightfold higher for shave biopsies. Wide re-excision was performed by the treating general practitioner for most (74.9%) melanomas, with thick melanomas preferentially referred to surgeons. The average Breslow thickness of invasive melanomas re-excised by general practitioners was 0.67 mm compared with 1.99 mm for those referred to other specialists (P < 0.0001). Of 205 patients with invasive melanoma, 14 progressed to metastatic disease, 50% of these being associated with nodular melanoma. Nine patients progressed to melanoma-specific death. The 5-year survival rate for patients with invasive melanoma was 95.2% (95% CI: 91.2–98.5%). Conclusions: Diagnostic and therapeutic management of a series of melanoma patients by Australasian general practitioners were closely aligned with current guidelines and 5-year survival with respect to invasive melanoma was at least as favourable as national population-based metrics. © 2022 The Authors. Australasian Journal of Dermatology published by John Wiley & Sons Australia, Ltd on behalf of Australasian College of Dermatologists.