Abstract
Local treatment of residual or recurrent nasopharyngeal carcinoma (NPC) is a challenge. Photodynamic therapy (PDT) is an established treatment modality for incurable head and neck carcinoma. Several studies reported induction of an immune response after PDT. We present a patient with residual T4N0M0 NPC who was treated with PDT for residual disease after initial treatment with neo-adjuvant chemotherapy and radiotherapy. Five years after PDT, the tumor did not progress and the patient is still in good condition. We discuss this remarkable long-term response to PDT and speculate on possible mechanisms.
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