dowling-degos disease is a rare sporadic or autosomal dominant pigmentary entity, in which clusters of papules and reticulate macules slowly develop with predominance in flexural regions. this entity is due to mutations in the keratin 5 gene, and is related with other cutaneous disorders. we report the sporadic form of dowling-degos disease in an elderly man with multiple seborrheickeratosis in...

Actas Dermosifiliogr. 2009;100:615-34 619 7. Menzies SW, Westerhoff K, Rabinovitz H, Kopf AW, McCar thy WH, Katz B. Sur face microscopy of pigmented basal cel l carcinoma. Arch Dermatol. 2000;136: 1012-6. 8. Zaballos P, Blázquez S, Puig S, Salsench E, Rodero J, Vives JM, et al. Dermoscopic pattern of intermediate stage in seborrhoeic keratosis regressing to lichenoid keratosis: report of 24 cas...

It is well known that cell surface glycoconjugates play an important role in cell proliferation, adhesion and differentiation. The aim of this investigation was to define the changes of the glycoconjugate saccharidic moieties in the epidermis and derma of patients affected by several skin pathologies such as seborrheic keratosis, lichen planus, granuloma annulare and palmoplantaris keratoderma....

Dermatofibroma is a frequent benign tumor of easy clinical diagnosis in most cases, but that can mimic other dermatoses. Dermoscopy may help to define the diagnosis and its classical pattern is a central white area, similar to a scar, surrounded by a discrete pigment network. However, dermoscopic findings are not always typical. We describe here a case of dermatofibroma exhibiting ridges, furro...

neous biopsies, yielding 69 collision tumors. Cascajo and colleagues found 54 collision tumors of malignant cutaneous neoplasms associated with seborrheic keratoses in 85,000 biopsies. The most common combinations found by Boyd and Rapini included basal cell carcinoma and nevus (14), basal cell carcinoma and seborrheic keratosis (8), nevus and seborrheic keratosis (14), actinic keratosis and ne...