Treating Recurrent Cases of Squamous Cell Carcinoma with Radiotherapy

Patients with chronic lymphocytic leukemia (CLL) are at a significantly increased risk of developing cutaneous squamous cell carcinoma (SCC), in part because of their impaired immunosurveillance. Here, we report the cases of 4 patients with CLL who had locally aggressive cutaneous SCC managed with radiotherapy for local recurrence following surgical excision. All tumours were located in the head-and-neck region. All patients initially achieved complete regression of disease; however, 2 had local recurrence a mean of 8 months after treatment completion. One patient died from progressive SCC. Our findings agree with the high rates reported in literature of multiple tumours, local recurrence, metastases, and mortality from SCC in patients with CLL. Radiotherapy plays an important role in patient management, and it is the recommended treatment modality when complete surgical excision of disease would result in anatomic and functional defects. Radiotherapy is often used in the case of local recurrence after one or more attempts at surgical excision. Dose escalation through intensity-modulated radiotherapy, hyperfractionation, or novel treatment techniques such as high-intensity focused ultrasound may be explored to improve local control of SCC lesions. To optimize patient outcomes, cutaneous SCC arising in patients with a history of CLL should be managed and followed in a multidisciplinary clinic, with regular skin surveillance and prompt treatment.