Características dermatoscópicas del triquilemoma facial

Lozano-Masdemont, Belén; Simón, Isabel María de Lara; López, Lucía González

doi:10.1016/j.ad.2017.03.009

Cited by 3 publications

(2 citation statements)

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“…Based on dermoscopic images, trichilemmomas have been described as keratin masses with perivascular whitish halos, 27 hyperkeratotic central areas with peripheral erythematous radial lines in a red iris-like structure, 28 non-pigmented nodules with peripheral vessels arranged in a radial and centered manner, 29 and linear vessels arranged in a radial manner with surrounding reflective whitish areas, as well as central crusted and hyperkeratotic areas. 30 In contrast, DT has been described as focal crown vessels with unspecific poorly defined white areas and hyperkeratotic central depression. 29 Therefore, the presence of white structures, a hyperkeratotic central area, and a radial arrangement of peripheral vessels may support a diagnosis of DT.…”

Section: Discussionmentioning

confidence: 99%

Desmoplastic trichilemmoma of the scalp: case report and literature review of immunohistochemical staining features

2019

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Desmoplastic trichilemmoma (DT) of the scalp is a rare disease. In this report, we describe a 67-year-old man who had a small papule lesion around the hairline of the left scalp for more than 40 years. The lesion had rapidly grown to become a solitary, round, 15-mm neoplasm within 6 months. Histopathological examination showed that the mass was composed of a peripheral layer of columnar cells with nuclear palisading resembling the outer root sheath; the mass was surrounded by a thickened glassy basement membrane. The stroma in the center of the mass displayed solid, hyaline degeneration and an eosinophilic pattern, streaked with epithelial cords or islands. Immunohistochemical evaluation showed diastase-resistant, periodic acid–Schiff-positive desmoplastic stroma at the center, and Ber-EP4-negative tumor cells (CD34-positive focally and Bcl-2-positive at the periphery). The tumor was completely resected, and no recurrence occurred during the follow-up period. In this report, we also summarize immunohistochemical features from previous reports of DT, facilitating differential diagnosis of DT from some invasive skin tumors.

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Section: Discussionmentioning

confidence: 99%

Desmoplastic trichilemmoma of the scalp: case report and literature review of immunohistochemical staining features

2019

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“…Recently, Horcajada-Reales et al [2] have reported the dermoscopic characteristics of trichilemmoma: the red irislike structures (radial peripheral linear vessels with distal thickening, taking on a triangular form); reflective whitish areas surrounding those vessels; and central hyperkeratotic masses (the latter 2 already described by Lallas et al) [3] . Than Lozano-Masdemont et al described peripheral linear vessels arranged radially in a triangle formation, hairpin vessels surrounded by reflective whitish areas, and a central crusted and hyperkeratotic area [4] . Our case has the same description as Lozano in terms of doted and hairpin vessels, whereas we didn't find Horcajada-Reales description especially the red iris-like structures.…”

Section: Discussionmentioning

confidence: 99%