Desmoplastic nevus: clinicopathologic keynotes.

We describe 3 cases of desmoplastic nevus with special emphasis on some repetitive dermoscopic and histopathologic features, which-if confirmed on larger series-could allow to identify desmoplastic nevus as a specific clinicopathologic entity within the spectrum of acquired melanocytic nevi.

Slow-growing melanoma: Report of five cases.

Background: Epidemiologic data on melanoma reveal a considerable increase in incidence, especially of the early forms (melanoma in situ and early invasive melanoma), but the mortality rates are relatively stable. These data suggest the hypothesis of the existence of a melanoma with less aggressive biological behaviour. This hypothesis is, however, hard to be proven if the assumption is true that more and less aggressive melanomas very often exhibit overlapping clinical and histopathologic features.

Dermoscopy of eccrine poroma.

Eccrine poroma (EP) may clinically mimic a number of benign and malignant skin tumors. Dermoscopy improves the clinical diagnosis of many pigmented and nonpigmented skin tumors, but to date little is known about the impact of dermoscopy in the diagnosis of EP. We report 2 patients with EP and discuss the diagnostic significance of the observed dermoscopic findings.