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Dermoscopy of non-pigmented eccrine poromas: study of Mexican cases
Ana Elena Domínguez Espinosa1, Blanca Carlos Ortega, Ricardo Quiñones Venegas
1Hospital General de Zona 8, Gilberto Flores Izquierdo, Instituto Mexicano del Seguro Social, Mexico City, Mexico.
Background:
Eccrine poroma is a benign neoplasm that can mimick a malignant neoplasm dermoscopically. The characteristic vascular pattern of this tumor has not been established.
Objective:
To evaluate dermoscopic features of non-pigmented eccrine poroma in Mexican patients.
Method:
We retrospectively studied histologically proven cases of eccrine poroma from three Mexican hospitals analyzed by four dermoscopists.
Results:
Thirteen cases were studied. A polymorphous vascular pattern was found in most cases. Four presented with irregular linear and branched vessels with semi-elliptical, or semicircular endings ("chalice-form" and "cherry-blossoms" vessels). Structureless pink-white areas were the most common other dermoscopic finding.
Conclusions:
"Chalice-form" and "cherry-blossom" vessels have not been reported in other benign or malignant neoplasms and can be a useful clue to the diagnosis of non-pigmented eccrine poroma. Due to the variability of dermoscopic patterns of eccrine poroma further studies are required to establish the specificity of our findings.
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