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    Glossary Trichilemmal Cysts

    non-cancerous, keratin-filled lumps typically found on the scalp

    Trichilemmal cysts, also known as pilar cysts, are non-cancerous, fluid-filled lumps that typically develop on the scalp. They originate from the outer root sheath of hair follicles and are filled with keratin, a protein found in hair, skin, and nails. These cysts are usually firm, smooth, and can sometimes be hereditary.

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    Research 30 of 234

    1. Baker′s dozen on the scalp: An interesting case of multiple trichilemmal cyst Journal of Cutaneous and Aesthetic Surgery · 2014 · 5 citations
    2. Osseous Metaplasia and Mature Bone Formation With Extramedullary Hematopoiesis in Trichilemmal Cyst American Journal of Dermatopathology · 2013 · 3 citations
    3. Trichilemmal Cysts With Divergent Ductal Differentiation: A Series of 4 Cases 2020 · 2 citations
    4. Ultrastructural characteristics of trichilemmal cysts: report of two cases Medical Electron Microscopy · 2001 · 2 citations
    5. The Value of Ultrasound for Differentiating Trichilemmal Cysts From Epidermoid Cysts Journal of Ultrasound in Medicine · 2023 · 1 citations
    6. Trichilemmal cyst of the neck: case report and review of the literature 2021 · 1 citations
    7. Clinicopathological factors associated with trichilemmal cysts JPRAS Open · 2025
    8. GWAS Identifies Three Susceptibility Loci for Trichilemmal Cysts 2021
    9. Trichilemmal cysts of the scrotal wall Sonography · 2015
    10. Proliferative trichilemmal cyst of the plantar surface: An unusual localization: A case report World Journal of Advanced Research and Reviews · 2026
    11. Trichilemmal cyst of the eyelid: An unusual presentation in paediatric age group Indian Journal of Ophthalmology - Case Reports · 2026
    12. A Case Report of Kaphaja Granthi w.s.r. to Trichilemmal Cyst Journal of Ayurveda and Integrated Medical Sciences · 2025
    13. Baricitinib-Induced Trichilemmal Cyst Reactivation in a Woman With Alopecia Areata Cutis · 2025
    14. Malignant appearance of trichilemmal cyst: a case report with review of the literature International surgery journal · 2023
    15. Multicentric calcified trichilemmal cysts with alopecia universalis affecting siblings Indian Journal of Dermatology Venereology and Leprology · 2012 · 9 citations
    16. A Monoallelic Two-Hit Mechanism in PLCD1 Explains the Genetic Pathogenesis of Hereditary Trichilemmal Cyst Formation 2019 · 21 citations
    17. Proliferating trichilemmal cyst with histological malignant transformation: Identification of hair sheath keratins in the tumor. The Nishinihon Journal of Dermatology · 1989 · 3 citations
    18. A malignant proliferating trichilemmal cyst arising on the elbow of a man: A case report and review of the literature Medicine · 2023 · 2 citations
    19. A Case of Proliferating Trichilemmal Cyst with Trichoepitheliomatous Change Linchuang pifuke zazhi · 2002
    20. Subtle Trichilemmal Carcinoma of Neck Initially Misdiagnosed as Benign Cyst and Ultimately Treated with Mohs Micrographic Surgery Skin · 2023
    21. A Rare Presentation of a Pilar (Trichilemmal) Cyst of the Upper Arm in an Elderly Male Cureus · 2026
    22. Cutaneous Adnexal Cysts Revisited: What We Know and What We Think We Know Dermatopathology · 2018 · 13 citations
    23. PLCD1 and Pilar Cysts 2019 · 5 citations
    24. Immunoperoxidase anti-keratin staining of epidermal and pilar cysts British Journal of Dermatology · 1984 · 10 citations
    25. 1375 Cutaneous adnexal cysts revisited: A novel classification based on morphological and molecular features Journal of Investigative Dermatology · 2018
    26. Clinicopathological study of cutaneous adnexal cyst with some unusual presentation Journal of Pathology of Nepal · 2021 · 2 citations
    27. Follicular Hybrid Cyst With Isthmic-Catagen, Pilomatrical, and Syringocystadenoma Papilliferum Components American Journal of Dermatopathology · 2012 · 2 citations
    28. Expression of the hair stem cell-specific keratin 15 in pilar tumors of the skin. PubMed · 1999 · 54 citations
    29. Immunohistochemical Study of Calretinin in Normal Hair Follicles and Tumors With Follicular Differentiation Actas Dermo-Sifiliográficas · 2008 · 15 citations
    30. Naevus trichilemmocysticus – the first paediatric case of a newly delineated organoid naevus 2010 · 8 citations