Dermoscopy of non-pigmented eccrine poromas: study of Mexican cases

Abstract

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.

Dermoscopic features and patterns of poromas: a multicentre observational case–control study conducted by the International Dermoscopy Society

“…Lesion morphology (macule, papule, plaque, nodule, tumour), number of colours and maximum diameter (in millimetres) were recorded. A comprehensive list of dermoscopic structures reported to be present in poromas was created (Data , Supporting Information) . After careful appraisal of previous descriptions and consensus amongst the reviewers, cherry‐blossom vessels, flower‐like vessels, floral vessels, chalice‐like vessels and leaf‐like vessels were categorized as structure called branched vessels with rounded endings, defined as branched vessels with looped or coiled terminal endings that characteristically have a rounded silhouette.…”

“…A comprehensive list of dermoscopic structures reported to be present in poromas was created (Data S1, Supporting Information). [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] After careful appraisal of previous descriptions and consensus amongst the reviewers, cherry-blossom vessels, flower-like vessels, floral vessels, chalice-like vessels and leaf-like vessels were categorized as structure called branched vessels with rounded endings, defined as branched vessels with looped or coiled terminal endings that characteristically have a rounded silhouette. We considered milky-red areas, pink-white structureless areas, pink homogeneous area and creamy red background as one feature called milky-red areas, defined as structureless areas with pink to white-red areas.…”

Dermoscopy of a non-pigmented eccrine poroma

“…Shalom et al also reported this finding in the largest series regarding the dermoscopy of eccrine poromas [11] . Dominguez Espinosa proposed the term -cherry-blossom‖ and -chalice-form‖ to better describe these structures [6] . In our case, we added a -cactus-like‖ vascular structure.…”

“…However, there are a limited number of studies regarding dermoscopy of eccrine poroma to date. As it is predominantly a non-pigmented neoplasm, its dermoscopic evaluation should be focused doi: 10.18282/jsd.v1.i3.55 on the vascular patterns, as these have been described in previous studies [3][4][5][6][9][10][11] . The evaluation of the vascular patterns under dermoscopy requires a proper techniqueperformed with a contact liquid, preferably ultrasound gel, and with slight pressure applied on the lesion.…”

“…It is usually located on the palms and soles, though it may also develop on other locations such as the head and neck, and the trunk. It is more frequently diagnosed in middle-aged and elderly persons, and equally affects both males and females [1,[3][4][5][6] . The tumor is mainly asymptomatic.…”