Abstract
Skin cancer incidences are increasing. Treatment for basal cell carcinomas (BCCs) can be questioned in certain patients. Treatment options are various, but Mohs micrographic surgery (MMS) has the highest cure rate. It is, however, time-consuming and results in high logistical burden and treatment costs for both patients and society. This study critically re-evaluates MMS for facial BCCs in older adults. The main objective is to examine all clinical, tumour and patient characteristics in relation to safety and survival to detect a subgroup in which MMS was not the best choice. The overall aim is to identify characteristics that support clinical decision-making in daily practice. Patients that received MMS between November 1998 and December 2012 were included. Only patients >75 years with a facial BCC were withheld for analysis. This is a retrospective cohort study, since evaluating the outcome of MMS in accordance with life expectancy is the main objective. Patient charts were evaluated towards comorbidities, complications and survival. This cohort comprises 207 patients. Median survival was 7.85 years. The age-adjusted Charlson comorbidity index (aCCI) was divided into low/medium scores (aCCI < 6) and high scores (aCCI ≥ 6). Median survival was 11.58 years in the low aCCI group and 3.60 years in the high aCCI group (p < 0.001). There was a very strong association between high aCCI and survival (HR, 6.25; 95% CI, 3.83-10.21). Other characteristics were not associated with survival. Clinicians should assess the aCCI in older patients presenting with a facial BCC before deciding if MMS is an eligible treatment option. High aCCI has shown to be an indicator for low median survival, even in MMS patients with usually high functional status. MMS should be waived as treatment in older patients with high aCCI scores in favour of other, less intensive and less expensive treatment options.
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