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Fibrofolliculoma: solitary and multiple types.

T M Starink¹, M H Brownstein

¹Department of Dermatology, Academic Hospital, Free University, Amsterdam, The Netherlands.

Journal of the American Academy of Dermatology

|September 1, 1987

Summary

Solitary fibrofolliculomas are typically nonhereditary skin growths, unlike multiple tumors which can indicate inherited conditions. This study details new cases of both solitary and familial fibrofolliculomas.

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Area of Science:

Dermatology
Oncology
Genetics

Background:

Multiple skin tumors often exhibit autosomal dominant inheritance and may present with associated cutaneous or internal lesions.
Solitary skin growths are generally nonhereditary and lack associated abnormalities.
Previous literature on solitary fibrofolliculomas is limited, with few reports on multiple occurrences without associated lesions.

Observation:

This study investigated five new cases of solitary, nonhereditary fibrofolliculomas and one case of multiple, familial fibrofolliculomas.
Clinically, fibrofolliculomas presented as small growths featuring a central dilated follicle with horny material.
Histological examination revealed a hyperplastic follicular infundibulum with a central keratinous plug and basaloid cell strands within an angiofibromatous stroma.

Findings:

Solitary fibrofolliculomas, despite identical clinical and microscopic features, are typically nonhereditary and trivial.
Multiple fibrofolliculomas, particularly those with autosomal dominant inheritance, may be associated with other abnormalities.
Fibrofolliculoma represents a skin tumor where inheritance patterns correlate with associated clinical manifestations.

Implications:

Distinguishing between solitary and multiple fibrofolliculomas is crucial for determining potential hereditary implications.
Understanding the genetic basis of fibrofolliculomas can aid in diagnosis and patient counseling.
Further research into the genetic factors and associated syndromes of fibrofolliculomas is warranted.

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