Electrochemotherapy is becoming a promising technique for the management of malignancies of skin and non-skin origin. The current review aims to clarify current knowledge on administration of electrochemotherapy for the treatment of various skin tumours. A systematic literature search was performed, up to the end of 2016, on studies in which the application of electrochemotherapy for management of primary and metastatic cutaneous malignant tumours was assessed. Having selected appropriate studies, pooled estimates of mean objective (complete) responses, with 95% confidence intervals (CIs), were calculated to assess treatment efficacy. Finally, the main emerging themes from the papers were discussed in more detail. From 465 records identified through database searching, a total of 128 studies were screened, of which 70 were included for review. After a pooled analysis, the estimate for mean objective response following electrochemotherapy was 84.02% (95% CI: 80.08-87.61). Furthermore, the pooled estimate of objective treatment response of evaluated studies was 83.91% (95% CI: 79.15-88.17%) for bleomycin and 80.82% (95% CI: 66.00-92.36%) for cisplatin. Electrochemotherapy is a feasible, inexpensive, fast and easy technique to perform local treatment, regardless of tumour type, with a low level of adverse effects and patient discomfort. This method can be applied alone for patients with primary cutaneous lesions, or local or locoregional metastases, or as an additional treatment modality in patients with distant metastases.
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