Verrucous lichen planus (VLP), is a chronic inflammatory dermatosis mainly involving the lower limbs. It rarely affects the perineal area, where it occurs in association with other mucocutaneous lichen lesions. We here report the case of a 51-year old patient with isolated perineal verrucous lichen planus. The patient, who had no significant medical history, presented with painless, verrucous, ...

Introduction: Porokeratosis mibelli is a rare, chronic, and slowly progressive genodermatotic characterized by abnormality of keratinization. The clinical manifestations are hyperkeratotic papules or plaques surrounded thread-like elevated border that widens centrifugally. Rarity this case means the science behind it underdeveloped. Thus, we present as an educational vehicle to further develop ...

Verrucous carcinoma of the larynx clinically resembles laryngeal papilloma in that both are wart-like masses on the vocal cords and may be characterized by multifocality and recurrence. Human papillomavirus (HPV) infection is an etiological factor in laryngeal papilloma, and recent evidence implicates HPV in squamous neoplasias. To determine whether HPV is also associated with verrucous carcino...

β-Catenin acts as a structural protein at cell-cell adherens junctions and as a transcription activator mediating Wnt signal transduction. Altered β-catenin expression has been associated with loss of cell differentiation and acquisition of an invasive phenotype. In the present study, β-catenin expression was compared immunohistochemically between oral squamous cell carcinoma (30 cases) and ver...

Disseminated superficial porokeratosis (DSP) is a specific disorder of keratinization. Genetic studies show that DSP is an autosomal dominant trait. Clinically, the lesions show a sharply demarcated and hyperkeratotic plaque with central atrophy. The lesions appear mainly in the extremities and generally develop with bilateral symmetry. Unusual cases of DSP accompanied by severe pruritus have b...

© 2015 The Authors. doi: 10.2340/00015555-1908 Journal Compilation © 2015 Acta Dermato-Venereologica. ISSN 0001-5555 Porokeratosis (PK) is a disorder of clonal hyperproliferation of keratinocytes. It has several clinical manifestations characterised by variably sized papules or plaques with a fine peripheral keratotic rim and central atrophy accompanied by a histological finding of cornoid lame...