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    Glossary Follicular Infundibulum

    upper part of hair follicle where sebum exits

    The follicular infundibulum is the upper part of a hair follicle, extending from the skin's surface down to the point where the sebaceous (oil) gland opens into the follicle. This region is crucial for the passage of sebum and dead skin cells to the skin's surface, and its blockage can lead to conditions like acne.

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    1. Microneedling dilates the follicular infundibulum and increases transfollicular absorption of liposomal sepia melanin Clinical, Cosmetic and Investigational Dermatology · 2015 · 25 citations
    2. Reflectance confocal microscopy can differentiate dermoscopic white dots of the scalp between sweat gland ducts or follicular infundibulum British Journal of Dermatology · 2011 · 20 citations
    3. Pilomatricoma can differentiate not only towards hair matrix and hair cortex, but also follicular infundibulum, outer root sheath and hair bulge Experimental Dermatology · 2009 · 18 citations
    4. Tumors of the follicular infundibulum 2019
    5. The changes in the expression levels of follicular markers in keratoacanthoma depend on the stage: keratoacanthoma is a follicular neoplasm exhibiting infundibular/isthmic differentiation without expression of CK15 Journal of Cutaneous Pathology · 2014 · 28 citations
    6. Dermoscopic features of infundibular keratinising acanthomas and follicular cysts: Description, assessment and histopathological correlation Veterinary Dermatology · 2025
    7. Proliferative, lymphocytic, infundibular mural folliculitis and dermatitis with prominent follicular apoptosis and parakeratotic casts in a Labrador retriever: Clinical, histopathological and dermoscopic features and co‐morbidities Veterinary Dermatology · 2024
    8. New insights on dandruff/seborrhoeic dermatitis: the role of the scalp follicular infundibulum in effective treatment strategies 2011 · 46 citations
    9. Ex-vivo measurement of scalp follicular infundibulum delivery of zinc pyrithione and climbazole from an anti-dandruff shampoo Journal of pharmaceutical and biomedical analysis · 2017 · 12 citations
    10. Hypopigmented facial lesions: a case of eruptive tumor of follicular infundibulum International Journal of Dermatology · 2025
    11. Proliferative, lymphocytic, infundibular mural folliculitis and dermatitis with prominent follicular apoptosis and parakeratotic casts in four Labrador retrievers: preliminary description and response to therapy Veterinary dermatology · 2013 · 10 citations
    12. Clinicopathologic and trichoscopic features of keratosis follicularis spinulosa decalvans: A case series study Journal of dermatology · 2023
    13. Recurrent inverse necrotizing infundibular crystalline folliculitis Journal of Cutaneous Pathology · 2024 · 1 citations
    14. ‘Follicular Swiss cheese’ pattern - another histopathologic clue to alopecia areata Journal of Cutaneous Pathology · 2010 · 35 citations
    15. Perifollicular inflammation and follicular spongiosis in androgenetic alopecia Journal of The American Academy of Dermatology · 2021 · 1 citations
    16. ‘Follicular Swiss cheese’ pattern–another histopathologic clue to alopecia areata Yearbook of Dermatology and Dermatologic Surgery · 2012
    17. Other Questions on Basaloid Follicular Hamartoma Archives of Dermatology · 1994 · 8 citations
    18. Immunohistochemical Study of Calretinin in Normal Hair Follicles and Tumors With Follicular Differentiation Actas Dermo-Sifiliográficas · 2008 · 15 citations
    19. Follicular and perforating disorders Journal of cutaneous pathology · 1985 · 11 citations
    20. Preliminary findings suggest hidradenitis suppurativa may be due to defective follicular support British Journal of Dermatology · 2013 · 6 citations
    21. Histopathologic Criteria for Follicular Differentiation 2017 · 1 citations
    22. Lipid analysis of follicular casts from cyanoacrylate strips as a new method for studying therapeutic effects of antiacne agents 2001 · 88 citations
    23. A case of localized follicular hamartoma: an ultrastructural and immunohistochemical study Journal of Cutaneous Pathology · 2000 · 21 citations
    24. Facial Follicular Spicules: A Rare Cutaneous Presentation of Trichodysplasia Spinulosa Cutis · 2022
    25. Increasing the percutaneous absorption and follicular penetration of retinal by topical application of proretinal nanoparticles European journal of pharmaceutics and biopharmaceutics · 2019 · 14 citations
    26. Human hair follicle: reservoir function and selective targeting British Journal of Dermatology · 2011 · 97 citations
    27. Retrospective study: the presence of<i>Malassezia</i>in feline skin biopsies. A clinicopathological study Veterinary dermatology · 2002 · 66 citations
    28. Frontal fibrosing alopecia: Regrowth following cessation of sunscreen on the forehead Australasian Journal of Dermatology · 2018 · 26 citations
    29. What causes acne inversa (or hidradenitis suppurativa)? – the debate continues Journal of Cutaneous Pathology · 2008 · 24 citations
    30. Yellow dots in trichoscopy: relevance, clinical significance and peculiarities Anais Brasileiros de Dermatologia · 2017 · 13 citations