Immunostaining in atypical fibroxanthoma of the skin.

Pathol Res Pract

Dermatologische Klinik, Universität München, FRG.

Published: December 1988

We have studied 12 cases of cutaneous atypical fibroxanthoma using immunohistochemistry to demonstrate lysozyme, alpha-1-antitrypsin, S-100-protein, receptors for peanut agglutinin, and intermediate filaments. Results were compared with immunostaining in 24 cases of other so-called fibrohistiocytic tumours. In addition 2 cases of atypical fibroxanthoma and 6 cases of fibrohistiocytic tumours were stained by monoclonal antibodies specific for the monocyte cell lineage (Ki-M1, Ki-M2, Ki-M6, Ki-M7, Ki-M8, OKM-1 and Leu-M1) and double-stained by monocyte-markers and Ki-67. The immunophenotype of atypical fibroxanthoma was rather similar to the marker profile found in malignant fibrous histiocytoma. All atypical fibroxanthomas were positive for vimentin and negative for epithelial markers. Monocyte lineage-specific determinants could be demonstrated in varying amounts in cells suggestive of being reactive. In contrast proliferating--Ki-67 positive--cells did not express monocyte/macrophage related antigens in atypical fibroxanthoma and malignant fibrous histiocytoma both. As to the histogenesis of these tumours our findings speak in favour of a derivation from primitive mesenchymal cells rather than from histiocytes.

Download full-text PDF

Source
http://dx.doi.org/10.1016/S0344-0338(88)80187-0DOI Listing

Publication Analysis

Top Keywords

atypical fibroxanthoma
20
fibrohistiocytic tumours
8
malignant fibrous
8
fibrous histiocytoma
8
fibroxanthoma
5
atypical
5
immunostaining atypical
4
fibroxanthoma skin
4
skin studied
4
cases
4

Similar Publications

Background: Prognostication of atypical spindle cell neoplasms, including atypical fibroxanthoma (AFX) and pleomorphic dermal sarcoma (PDS), is challenging; outcomes vary widely, and further identification of prognostic features is crucial.

Objective: To evaluate prognostic factors that may portend worse outcomes in patients with AFX and PDS.

Materials And Methods: A retrospective chart review of patients with AFX and PDS was conducted.

View Article and Find Full Text PDF

A rapidly-growing friable nodule on the cheek.

Dermatol Online J

August 2024

Department of Dermatology, Stanford University School of Medicine, California, USA Department of Dermatology, The Permanente Medical Group, Sacramento, California, USA.

Atypical fibroxanthoma and pleomorphic dermal sarcoma are on a spectrum of cutaneous tumors that present as ulcerated lesions in older adults. We present an 84-year-old man with pleomorphic dermal sarcoma, initially presenting as a bleeding lesion of the cheek that progressed to an eroded nodule.

View Article and Find Full Text PDF

Undifferentiated pleomorphic sarcoma (UPS) and related tumors are the most common type of soft tissue sarcoma. However, this spectrum of tumors has different etiologies with varying rates of metastasis and survival. Two dermal-based neoplasms in this class of pleomorphic sarcomas, atypical fibroxanthoma (AFX) and pleomorphic dermal sarcoma (PDS), are challenging to differentiate at initial biopsy but vary significantly in prognosis.

View Article and Find Full Text PDF

We report the case of a Hispanic male whose conjunctival atypical fibroxanthoma (AFX) grew very large, with intraocular as well as extraocular muscle extensions, and was treated with exenteration. A 50-year-old male presented with a one-month history of foreign-body sensation in his left eye. The initial examination revealed an erythematous, vascularized, pedunculated lesion arising from the left eye conjunctiva.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!