Dermoscopic Features of Facial Trichilemmoma

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

doi:10.1016/j.adengl.2017.08.017

Cited by 2 publications

(1 citation statement)

References 2 publications

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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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Case report and case series

Indu¹,

Vidhukumar

2020

KJP

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Case reports/series are the basic types of descriptive epidemiologic studies. The distinction between case reports and case series on the one hand, and case series and descriptive/analytic epidemiologic studies, on the other hand, is not sharp. History of medicine has demonstrated how case reports/series had generated or furthered medical knowledge in many situations. External validity and novelty are the key advantages of these studies. They act as 'screening studies' for deductive epidemiological research. Case reports/series are fraught with biases and lack of strength of evidence to inform clinical decision making. To generate evidence-based information, authors of case reports/series should give attention to the guidelines for maintaining of methodological rigour.

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Dermoscopic Features of Facial Trichilemmoma

Cited by 2 publications

References 2 publications

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

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

Case report and case series

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