A Rare Case of Lipidized Fibrous Histiocytoma of the Oral Cavity

Benign fibrous histiocytoma (FH) is a common cutaneous tumor that rarely occurs in the oral cavity. Lipidized FH is an uncommon variant characterized by abundant foam cells in collagenized stroma. To our knowledge, only a single case of oral lipidized FH affecting the tongue has been reported. We ex...

Full description

Saved in:
Bibliographic Details
Published inCurēus (Palo Alto, CA) Vol. 17; no. 4; p. e82265
Main Authors Shimada, Katsumitsu, Murakami, Satoshi, Hasegawa, Hiromasa
Format Journal Article
LanguageEnglish
Published United States Springer Nature B.V 14.04.2025
Cureus
Subjects
Adipocytes
Cell growth
Collagen
Dentistry
Hyperplasia
Oncology
Pathology
Plywood
Proteins
Smooth muscle
Systematic review
Tumors
foam cells
oral cavity
cd68
factor xiiia
lipidized fibrous histiocytoma
Online AccessGet full text

Cover

More Information
Summary:Benign fibrous histiocytoma (FH) is a common cutaneous tumor that rarely occurs in the oral cavity. Lipidized FH is an uncommon variant characterized by abundant foam cells in collagenized stroma. To our knowledge, only a single case of oral lipidized FH affecting the tongue has been reported. We examine a case of lipidized FH in the buccal mucosa of a patient presenting with a gradually enlarging, pedunculated lesion measuring up to 26 mm. A histological examination revealed a well-marginated but unencapsulated tumor with a Grenz zone, hyalinized stroma, and central foam cell aggregation. Immunohistochemically, the spindle and foam cells were CD68-positive, with focal Factor XIIIa positivity and negative bcl-2 staining. The lesion was completely excised, and no recurrence was observed. To our knowledge, this is the second reported case of oral lipidized FH and the first case in the buccal mucosa. Given its rarity and histological overlap with other xanthomatous lesions, accurate diagnosis is crucial with immunohistochemistry. Complete excision appears to be curative; however, a long-term follow-up is recommended, considering the subtype of fibrous histiocytoma developing in the orofacial region.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ObjectType-Case Study-2
ObjectType-Feature-4
content type line 23
ObjectType-Report-1
ObjectType-Article-3
ISSN:2168-8184
2168-8184
DOI:10.7759/cureus.82265