Bertil Persson
Consultant
Risk Factors for Complicated Mohs Surgery in the South Sweden Mohs Cohort
Riskfaktorer för komplicerad Mohs kirurgi i Mohs-kohorten i södra Sverige
Author
Summary, in English
Background: Mohs micrographic surgery (MMS) is a precise, tissue-sparing surgical technique that offers superior cure rates compared to traditional surgical excision. However, the degree of difficulty of MMS depends on many variables, and consequently, the number of surgical stages required for each case is quite unpredictable.
Objectives: To identify risk factors for complicated MMS, defined as MMS requiring ≥3 stages.
Methods: In a cohort study design, data were prospectively collected from 612 patients that underwent MMS for basal cell carcinoma (BCC) at the Department of Dermatology, Skåne University Hospital, Lund, between 2009 and 2020. Univariate and multivariate logistic regression were used to estimate the risk of MMS requiring ≥3 stages. Due to the risk of multicollinearity between recurrent or incompletely excised BCC and previous treatments, a partially and a fully adjusted multivariate logistic regression model were constructed.
Results: In fully adjusted multivariate analyses, age (odds ratio (OR) 1.02; confidence interval (CI) 95% 1.00-1.04), previous cryotherapy (OR 2.3; CI 95% 1.1-4.8), and >1 previous surgery (OR 3.4; CI 95% 1.5-7.7) were significantly associated with risk of complicated MMS. Recurrent BCC was associated with the risk of complicated MMS in partially adjusted multivariate analyses, but not in the fully adjusted analyses. In this highly selected cohort, histopathological subtype, and tumour localization were not associated with the risk of complicated MMS.
Conclusions: Older age and tumours previously treated with cryotherapy or multiple prior surgeries increased the risk of MMS requiring ≥3 stages. Whether recurrent BCC is an independent risk factor for complicated MMS needs further evaluation. Knowledge of these risk factors may ameliorate the planning of Mohs surgeries.
Objectives: To identify risk factors for complicated MMS, defined as MMS requiring ≥3 stages.
Methods: In a cohort study design, data were prospectively collected from 612 patients that underwent MMS for basal cell carcinoma (BCC) at the Department of Dermatology, Skåne University Hospital, Lund, between 2009 and 2020. Univariate and multivariate logistic regression were used to estimate the risk of MMS requiring ≥3 stages. Due to the risk of multicollinearity between recurrent or incompletely excised BCC and previous treatments, a partially and a fully adjusted multivariate logistic regression model were constructed.
Results: In fully adjusted multivariate analyses, age (odds ratio (OR) 1.02; confidence interval (CI) 95% 1.00-1.04), previous cryotherapy (OR 2.3; CI 95% 1.1-4.8), and >1 previous surgery (OR 3.4; CI 95% 1.5-7.7) were significantly associated with risk of complicated MMS. Recurrent BCC was associated with the risk of complicated MMS in partially adjusted multivariate analyses, but not in the fully adjusted analyses. In this highly selected cohort, histopathological subtype, and tumour localization were not associated with the risk of complicated MMS.
Conclusions: Older age and tumours previously treated with cryotherapy or multiple prior surgeries increased the risk of MMS requiring ≥3 stages. Whether recurrent BCC is an independent risk factor for complicated MMS needs further evaluation. Knowledge of these risk factors may ameliorate the planning of Mohs surgeries.
Department/s
- LUCC: Lund University Cancer Centre
- LUSCaR- Lund University Skin Cancer Research group
- Dermatology and Venereology (Lund)
- Clinical Sciences, Helsingborg
- Schmidtchen Lab
Publishing year
2022-07-01
Language
English
Pages
1113-1117
Publication/Series
Journal of the European Academy of Dermatology and Venereology
Volume
36
Issue
7
Document type
Journal article
Publisher
Elsevier
Topic
- Dermatology and Venereal Diseases
- Cancer and Oncology
Keywords
- Basal Cell Carcinoma
- Surgery
Status
Published
Project
- Improving Skin Cancer Diagnosis and Management in Teledermoscopy and Mohs Surgery
Research group
- LUSCaR- Lund University Skin Cancer Research group
- Schmidtchen Lab
ISBN/ISSN/Other
- ISSN: 1468-3083