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    Glossary Trichoepithelioma

    benign skin tumor originating from hair follicles

    Trichoepithelioma is a benign skin tumor that originates from hair follicles. It typically appears as small, firm, flesh-colored or slightly pink nodules, often on the face, and is usually non-cancerous. While it is generally harmless, multiple lesions can sometimes be associated with genetic conditions, and a dermatologist may perform a biopsy to confirm the diagnosis.

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    1. Induction of basal cell carcinomas and trichoepitheliomas in mice overexpressing GLI-1 Proceedings of the National Academy of Sciences · 2000 · 380 citations
    2. Induction of basal cell carcinomas and trichoepitheliomas in mice overexpressing GLI-1 Proceedings of the National Academy of Sciences · 2000 · 333 citations
    3. Cytokeratin 15 expression in trichoepitheliomas and a subset of basal cell carcinomas suggests they originate from hair follicle stem cells Journal of Cutaneous Pathology · 1999 · 133 citations
    4. Cytokeratin expression in trichoblastic fibroma (small nodular type trichoblastoma), trichoepithelioma and basal cell carcinoma British Journal of Dermatology · 1999 · 87 citations
    5. Generalized trichoepitheliomas with alopecia and myasthenia gravis: Clinicopathologic and immunohistochemical study and comparison with classic and desmoplastic trichoepithelioma Journal of the American Academy of Dermatology · 1986 · 54 citations
    6. Immunohistochemical Analysis of the Mechanistic Target of Rapamycin and Hypoxia Signalling Pathways in Basal Cell Carcinoma and Trichoepithelioma PloS one · 2014 · 15 citations
    7. The clinicopathological spectrum of trichoepitheliomas: a retrospective descriptive study International Journal of Dermatology · 2015 · 6 citations
    8. Multiple Trichofolliculomas Mimicking Multiple Trichoepitheliomas Indian Journal of Dermatology · 2015 · 5 citations
    9. A case of multiple trichoepitheliomas associated with alopecia areata and systemic lupus erythematosus Journal of the American Academy of Dermatology · 2016 · 1 citations
    10. Can We Use Laser Hair Removal to Prevent the Formation of Trichoepithelioma Lesions? International Journal of Trichology · 2025
    11. Giant solitary trichoepithelioma: A rare trichogenic tumor IP Indian journal of clinical and experimental dermatology · 2024
    12. Diagnosis and Excision of a Solitary Trichoepithelioma Optometric clinical practice · 2022
    13. Linear trichoepithelioma on the neck of a 15-year-old girl Dermatology online journal · 2016
    14. 5a Trichoepithelioma 2008
    15. CPC14 Blaschko-linear trichoepitheliomas: unveiling type 1 segmental mosaicism British Journal of Dermatology · 2025
    16. Successful Management of Multiple Trichoepitheliomas in Identical Twins Using Combined Cryotherapy and Topical Tretinoin: A Four-Year Follow-up Case Report International Journal of Advanced Multidisciplinary Research and Studies · 2026
    17. A Case of Proliferating Trichilemmal Cyst with Trichoepitheliomatous Change Linchuang pifuke zazhi · 2002
    18. Desmoplastic Trichoepithelioma: Histopathologic and Immunohistochemical Criteria for Differentiation of a Rare Benign Hair Follicle Tumor From Other Cutaneous Adnexal Tumors Curēus · 2020 · 5 citations
    19. Multiple desmoplastic trichoepitheliomas with ossification and cholesterol deposition Clinical and Experimental Dermatology · 2009 · 2 citations
    20. Desmoplastic trichoepithelioma on the face mimicking basal cell carcinoma: a case report and literature review Portuguese Journal of Dermatology and Venereology · 2025
    21. 52252 Analysis of basal cell carcinoma and trichoepithelioma with digital spatial profiling Journal of the American Academy of Dermatology · 2024
    22. Immunohistochemical demonstration of breast‐derived and/or carcinoma‐associated glycoproteins in normal skin appendages and their tumors Journal of Cutaneous Pathology · 1992 · 71 citations
    23. Expression of the hair stem cell-specific keratin 15 in pilar tumors of the skin. PubMed · 1999 · 54 citations
    24. Rippled‐pattern trichomatricoma Journal of Cutaneous Pathology · 1989 · 29 citations
    25. The contribution of stem cells to epidermal and hair follicle tumours in the dog Veterinary Dermatology · 2013 · 18 citations
    26. Distinct expression profile of stem cell markers, LGR5 and LGR6, in basaloid skin tumors Virchows Archiv · 2017 · 9 citations
    27. Sox9 expression in canine epithelial skin tumors European journal of histochemistry · 2015 · 8 citations
    28. Trichoadenoma of Nikolowski- A Rare Tumour with Unusual Presentation Over Vulva JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH · 2017 · 6 citations
    29. Differential expression of phospho‐S6 in hair follicle tumors: Evidence of mammalian target of rapamycin pathway activation Journal of cutaneous pathology · 2019 · 4 citations
    30. Early leonine facies with alopecia in a young man International Journal of Dermatology · 2016 · 3 citations