Basal cell carcinoma (BC) is the most frequent malignant tumor of the skin and it accounts for 80% of non-melanoma skin cancer. The incidence is more than 2 million new cases each year worldwide. The high prevalence of BC, the risk of recurrence and the difficult visual boundaries delimitation emphasize the importance of studying new diagnostic and therapeutic alternatives, through proper demarcation of tumor margins, which may allow complete surgical excision. The photodiagnosis is based on different fluorescence emitted by the tumor cells, treated with a photosensitizer and then illuminated with Wood’s light, in comparison with the surrounding healthy tissue. The photodiagnosis represents a diagnostic method that allows a proper distinction between the tumor tissue and the surrounding healthy tissue that is not possible with the clinical diagnosis alone. It represents a reference procedure for the visual and in vivo determination of the margins of a tumor lesion to be surgically excised and that is difficult to define clinically in the boundaries delimitation of the surface. Hereafter we introduce the case of a female patient with a recurrent basal cell carcinoma, located in the nasal area and with margins of difficult definition. In this case the photodiagnosis has allowed to obtain a more precise evaluation and a final radical excision of the tumor.
Il carcinoma basocellulare (CB) è il più frequente tumore maligno della cute e costituisce l’80% dei tumori cuta-nei non melanocitari. Presenta un’incidenza superiore a 2 milioni di nuovi casi ogni anno in tutto il mondo. L’elevata prevalenza dei CB, il rischio di recidive e la spesso non semplice delimitazione visiva, sottolineano l’importanza di studiare nuove alternative diagnostiche e terapeutiche che, attraverso una corretta delimitazione dei margini tumorali della lesione cutanea, possano consentire un’asportazione chirurgica completa. La fotodiagnosi cutanea si basa sulla diversa fluorescenza emessa dalle cellule tumorali, trattate con un farmaco fotosensibilizzante e successivamente illuminate con luce di Wood, rispetto al tessuto sano circostante. È una metodica diagnostica che permette una corretta distinzione tra il tessuto tumorale e il tessuto sano circostante rispetto a quanto non sia possibile con la sola diagnosi clinica e rappresenta pertanto una procedura di riferimento per la determinazione visiva e in vivo dei margini di una lesione tumorale da asportare chirurgicamente e mal definibile nei contorni di superficie. Presentiamo il caso di una paziente con un carcinoma basocellulare recidivante, localizzato in sede nasale con difficile definizione dei margini della lesione, in cui la fotodiagnosi ha permesso di ottenere una più precisa valutazione dell’area tumorale e una conseguente asportazione radicale.
La fotodiagnosi cutanea nella delimitazione in vivo di carcinomi basocellulari problematici dell’estremo cefalico: studio di un caso
Borroni R;
2013-01-01
Abstract
Basal cell carcinoma (BC) is the most frequent malignant tumor of the skin and it accounts for 80% of non-melanoma skin cancer. The incidence is more than 2 million new cases each year worldwide. The high prevalence of BC, the risk of recurrence and the difficult visual boundaries delimitation emphasize the importance of studying new diagnostic and therapeutic alternatives, through proper demarcation of tumor margins, which may allow complete surgical excision. The photodiagnosis is based on different fluorescence emitted by the tumor cells, treated with a photosensitizer and then illuminated with Wood’s light, in comparison with the surrounding healthy tissue. The photodiagnosis represents a diagnostic method that allows a proper distinction between the tumor tissue and the surrounding healthy tissue that is not possible with the clinical diagnosis alone. It represents a reference procedure for the visual and in vivo determination of the margins of a tumor lesion to be surgically excised and that is difficult to define clinically in the boundaries delimitation of the surface. Hereafter we introduce the case of a female patient with a recurrent basal cell carcinoma, located in the nasal area and with margins of difficult definition. In this case the photodiagnosis has allowed to obtain a more precise evaluation and a final radical excision of the tumor.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.