Tumor of the follicular infundibulum Q85.1
Synonym(s)
Infundibuloma; Isthmicoma
History
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Mehregan, 1961
Definition
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Rare, benign adnexal tumor with hair follicle differentiation.
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Localization
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Located mainly in the head, neck and chest area.
Clinic
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Clinically uncharacteristic. Mostly solitary, rarely plural, skin-coloured, small plaques or papules, but also appearing as skin-coloured to slightly reddened spots.
Histology
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Tumor localized in the papillary and upper reticular dermis with reticularly branched epithelial strands formed by basaloid but also light-cellular elements. Tumor is covered by a regular surface epithelium. Isolated formation of bud-like hair follicles. Broad, homogenised, eosinophilic stroma. Bulky round cell infiltrates.
Diagnosis
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In most cases the diagnosis is made as a random histological finding.
Therapy
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If necessary, excision without larger safety distance.
Literature
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- Cribier B, Grosshans E (1995) Tunor of the follicular infundibulum: A clinicopathologic study. J Am Acad Dermatol 33: 979-984
- Inaloz HS et al (2002) Coexistence of tumor of the follicular infundibulum with an unusual trichilemmal tumor. At J Dermatopathol 24: 406-408
- Mahalingam M (2001) Tumor of the follicular infundibulum with sebaceous differentiation. J Cutan catheter 28: 314-317
- Mehregan AH, Butler JD (1961) A tumor of the follicular infundibulum. Arch Dermatol 83: 78-81
- Mehregan AH (1971) Tumor of the follicular infundibulum. Dermatologica 142: 177-183
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Outgoing links (1)
Excision;Disclaimer
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Prof. Dr. med. Peter Altmeyer