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INTRODUCTION Proliferative verrucous leukoplakia is a multifocal and progressive lesion of the oral mucosa, with unknown etiology, and commonly resistant to all therapy attempts with frequent recurrences. It is characterized by a high rate of oral squamous cell carcinoma and verrucou carcinoma transformations. OBJECTIVE To analyze the studies about Proliferative verrucous leukoplakia and deve...

Hansen et al. (1985) described proliferative verrucous leukoplakia (PVL) as a distinct entity of leukoplakia, presenting as verrucous, or exophytic lesion with progressive histological changes in sequential biopsies such as hyperkeratosis, different grades of dysplasia, verrucous carcinoma, and squamous cell carcinoma (SCC) [1]. In 2005, the WHO defined PVL as a rare subtype of oral leukoplakia...

We report a case of basal cell carcinoma that appeared from an epidermal verrucous nevus in a 61-year-old patient. The onset of basal cell carcinoma in sebaceous nevi, basal cell nevi and dysplastic nevi is relatively common, but it is rarely associated with epidermal verrucous nevi. There is no consensus on whether the two lesions have a common cellular origin or whether they merely represent ...

INTRODUCTION Verrucous carcinoma of the external genitalia and perianal region is a rare variant of well-differentiated squamous cell carcinoma. It has been reported to have limited metastatic potential. CASE PRESENTATION We report the case of a 54 year-old Moroccan man who presented with locally advanced giant condyloma acuminatum (Buschke-Löwenstein tumor) after prolonged intervals of negle...

Verrucous carcinoma is a rare variant of squamous cell carcinoma. It is well differentiated and rarely metastases but can sometimes be very aggressive locally in depth. The paper presents three cases of cutaneous verrucous carcinoma with different localizations. The first patient shows a lesion in the sacrogluteal region, the second one presented a tumor localized on the auricle (external ear),...

Digital squamous cell carcinoma is relatively rare and may present a diagnostic challenge by mimicking benign conditions, such as verruca vulgaris. We describe two patients with longstanding verrucous lesions of the nail bed, which proved to be squamous cell carcinoma at the histopathology examination, with molecular and cytological evidence of HPV infection. Complete excision was performed. Th...

CONTEXT Verrucous carcinoma of the bladder is a very rare malignant neoplasm, histologically similar to condyloma acuminatum. Usually it shows association with vesical schistosomiasis (bilharziasis). Only 13 cases unrelated to bilharziasis have been reported to date, and none of them reported koilocytosis, a typical finding in human papillomavirus infection. CASE REPORT We report a case of ve...