key: cord-0684253-mqk7qnkz
authors: Nolan, Grant S; Dunne, Jonathan A; Kiely, Ailbhe L; Pritchard Jones, Rowan O; Gardiner, Matthew; Jain, Abhilash
title: The effect of the COVID-19 pandemic on skin cancer surgery in the United Kingdom: a national, multi-centre, prospective cohort study and survey of Plastic Surgeons
date: 2020-09-16
journal: Br J Surg
DOI: 10.1002/bjs.12047
sha: 0e04bb28296b190329c02df45d8351f2d422fc4d
doc_id: 684253
cord_uid: mqk7qnkz

nan

The COVID-19 pandemic has negatively affected all skin cancer treatment. A national audit of skin cancer excisions by Plastic Surgeons was adapted to establish what effect the pandemic had on the provision and delivery of skin cancer treatment in the United Kingdom.

Throughout 'lockdown' (March 16 th -June 14 th 2020) a prospective cohort of patients undergoing non-melanoma skin cancer (NMSC) surgery was undertaken. Retrospective data was collected on melanoma surgery. Data from immediately prior to lockdown (March 16 th -22 nd ) served as a control as normal NHS activities were undertaken during this time. Consecutive monthly surveys of Plastic Surgeons confirmed trends.

Data on 2050 patients from 32 Plastic Surgery units were included (Table 1) . Surveys were received from 34 Plastic Surgery units. The median number of general anaesthetic (GA) lists per week per institution fell from 3 pre-lockdown to 0⋅5 in April (p < 0⋅0001) and did not reach pre-lockdown levels in June. Local anaesthetic (LA) lists were reduced in April (p = 0⋅001) and May (p = 0⋅006) but recovered in June (p = 0⋅91). When GA lists did occur, they were often in private hospitals (31-43% May/June vs 0% pre-lockdown, p < 0⋅0001).

The number of NMSC treated per week fell by 27-47% throughout April and May. Excision of Squamous cell carcinomas (SCCs) was prioritised over basal cell carcinomas (BCCs), and at the pandemics' peak SCCs comprised 71% of excisions (normal is 28% from an ongoing systematic review, 1 p < 0⋅0001). High-risk tumours were particularly affected; 77% of surgeons reported Mohs micrographic surgery stopped and 70% of surgeons experienced a reduced radiotherapy service. Many high-risk BCCs did not receive treatment and delays may necessitate wider excisions 2 . Incomplete excisions occurred in 6⋅0% (4⋅3% BCC, 8⋅6% SCC).

Despite prioritisation, SCC and melanoma treatment was affected. Only 26% (45/171) of melanoma patients with Breslow thickness ≥ 0⋅8 mm underwent sentinel lymph node biopsies (SLNB) during lockdown despite AJCC guidelines 3 . SLNB stopped according to 60% of surgeons in April. Delayed SLNB increases the false negative rate 4 and is inappropriate in head/neck and truncal melanomas 5 . SLNB upstages a proportion of melanomas who become eligible for immunotherapy. Most melanomas treated during the pandemic have missed out on being offered immunotherapy, and the long-term effect of this is unknown. Immunotherapy was severely reduced: only 8-15% of surgeons reported a normal service was running in May/June. Surveillance of SCC and melanoma stopped according to 10% of surgeons.

Two patients (0⋅7%) developed COVID-19 within 2-weeks of melanoma surgery (one LA and one GA who died from COVID-19). Data was not available for 220/501 patients so this must be interpreted cautiously; the high proportion of missing data may be because some patients are not followed up. The mortality from operating on patients with COVID-19 was recently reported as 26% 6 . That study was uncontrolled and likely at high-risk of selection bias for severe COVID-19; the study conducted when testing was only available for patients requiring hospital admission. For comparison, inpatient mortality in non-surgical COVID-19 patients is identical 7 . Our study demonstrates that skin cancer surgery was safe during the pandemic as 92% was under LA and complication rates were low ( Table 1) .

Most changes were in-line with pandemic guidelines 5 , like increased use of absorbable sutures (53% pre-lockdown to 86% mid-June, p < 0⋅0001) and decreased face-toface reviews (face-to-face 100% pre-lockdown to 44-56%, p < 0⋅0001 and telephone 12% pre-lockdown to 87-92%, p < 0⋅0001).

This study demonstrates all skin cancer treatment was negatively affected by the COVID-19 pandemic. As the lockdown is reduced, skin cancer services should be resumed urgently, as the risk of untreated skin cancer may now be considered greater than COVID-19.

Melanoma staging: Evidence-based changes in the American Joint Committee on Cancer eighth edition cancer staging manual

False-negative sentinel lymph node biopsy in head and neck melanoma

Advice for managing BCC, SCC and melanoma patients during Coronavirus pandemic

Mortality and pulmonary complications in patients undergoing surgery with perioperative SARS-CoV-2 infection: an international cohort study

Features of 20 133 UK patients in hospital with covid-19 using the ISARIC WHO Clinical Characterisation Protocol: prospective observational cohort study

The authors would like to thank the Reconstructive Surgery Trials Network (RSTN) and the British Association of Plastic, Reconstructive and Aesthetic Surgeons (BAPRAS) for their support throughout this project. We would also like to thank K. Anesti, D. Evriviades, N. Ibrahim, Z. Khan, C. Macdonald, B. Mayou and A. Nicola for their contributions to the data.

All authors declare they have no potential conflicts of interest. 

Prospective patient data collected on non-melanoma surgical excisions during lockdown (