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BACKGROUND Pigmented actinic keratosis (PAK) resembles lentigo maligna (LM) clinically and histopathologically in some cases. OBJECTIVES To describe the dermatoscopical characteristics of this uncommon variant of actinic keratosis and evaluate whether these characteristics show common features with LM. OBSERVATIONS We had the opportunity to examine a(More)
BACKGROUND Crystal storing histiocytosis (CSH) imitating rhabdomyoma is a very rare disease entity involving different tissues. The skin is involved in extremely rare cases. OBJECTIVES To describe the clinical and histopathological characteristics in a patient with unusually extensive skin involvement. OBSERVATIONS A 62-year-old woman presented with a(More)
We examined seven patients with lichen planus pigmentosus (LPP) clinically and microscopically. Clinically, all patients had a striking predominance of lesions in an intertriginous location, with most of them in the axillae. Microscopically, two biopsies were of significance. Except for the regressive lichen planus, which is usual in LPP, the active(More)
A 45-year-old woman had symmetrical livid plaques with yellowish hyperkeratoses for 5 years, which progressed on to the fingers and toes and on the soles of the feet. Two years later creamy, whitish areas and maceration appeared on the buccal mucosa and the lips. A skin biopsy revealed massive collagen hyaline degeneration in the perivascular area,(More)
Keratinisation disorders with distinctive histopathological patterns are few in number. We describe two men with unusual dermatosis, characterised by a distinctive pattern of focal dyskeratosis. Both men suffered from generalised dermatosis formed by verrucous red-brown plaques. Repeated skin biopsies showed the same histopathological pattern with foci of(More)
A 67-year-old man presented with grouped red papules with a smooth surface coalescing to relatively well-demarcated plaques on his left thigh, in the axillae and on the lateral parts of the trunk. The plaques were growing slowly, and the older ones had a frilled surface. A skin biopsy showed a zone of disappearance of the elastic fibres with a rim of giant(More)
A segmental distribution of pigmented purpura (PP) is rare. Our patient presented at 5 years of age with red-brown petechial macules and telangiectases on her chest, the inner and dorsal aspects of the right upper extremity, and the dorsal aspect of the hand, which had developed slowly over the previous 7 months. The lesions were intermittently pruritic. A(More)