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Dermatology Practical & Conceptual

Pigmented tumor in the nostril

…d inverted follicular keratosis. Observation We present a case of a white 64-year-old man, with no significant co-morbidities, who had a remote history of a prolonged sun exposure. The patient presented with an asymptomatic nodular growth and brown l…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Lymphocytic Vasculitis?

…in different ways by different authors. […] The purpose of this report is to suggest reconsideration of the diagnostic criteria of lymphocytic vasculitis.” Oh CW, Lee SH, Heo EP. A case suggesting lymphocytic vasculitis as a presenting s…

Histologic Diagnosis of Inflammatory Skin Diseases


…itial infiltrate of neutrophils and nuclear “dust” of neutrophils = Leukocytoclastic vasculitis, fully developed Beneath the necrotic epidermis, marked by a red rather than a blue hue as is seen normally, there are signs of re-epitheliali…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology


…h the wall of larger vessels and, therefore, the very presence of inflammatory cells in the wall of those vessels qualifies the process as vasculitis. The overwhelming majority of inflammatory processes in the skin are not associated with any sign of…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Pernio, Perniosis, Lupus Pernio, Chilblain, and Chilblain Lupus?

…howed a positive antinuclear antibody (ANA) in 10. A diagnosis of idiopathic perniosis (IP) was rendered in all 21 of these patients including those in whom a positive ANA was discovered, based on the absence of any other serological markers, signs,…

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