Spreading pigmented actinic keratosis
Moreno, A.; Llistosella, E.; de Moragas, J.M.
Medicina Cutanea Ibero-Latino-Americana 12(5): 379-382
1984
ISSN/ISBN: 0210-5187 PMID: 6396461 Document Number: 225695
Two cases of spreading pigmented actinic keratosis are reported. In case number one, an invasive, pigmented squamous cell carcinoma developed in the lesion. Clinicopathologic features include size greater than normal, lateral spread of the lesion, and presence of melanin in dysplastic epidermal cells, dendritic melanocytes and dermal melanophages. Differential diagnosis to be considered includes lentigo maligna, lentigo maligna melanoma and seborrheic keratosis.