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Dysgerminoma of the ovary. An immunohistochemical study of tumor-infiltrating lymphoreticular cells and tumor cells.

Abstract：

BACKGROUND:Human neoplasms often are accompanied by an inflammatory infiltrate. It has been proposed that this represents an immunologic response to the tumor. Dysgerminoma, a germ cell tumor of the ovary, is a classic example of this phenomenon. The authors investigated the immunophenotype of the tumor-infiltrating lymphoreticular cells (TIL) and tumor cells in this rare malignancy. METHODS:Tissue from seven dysgerminomas of the ovary was fixed in formaldehyde solution and embedded in paraffin and investigated immunohistochemically with a broad panel of monoclonal antibodies. In one case, additional immunohistochemical investigations were performed on cryopreserved tumor tissue. RESULTS:All seven tumors showed a marked cellular stromal reaction with formation of disseminated granulomas similar to that seen in the closely related testicular seminoma. The TIL were preponderantly T-cells (CD43+, CD45RO+, OPD4+) and macrophages/epithelioid cells (MAC387+, CD68+), B-cells (CD20+, Ki-B3+), natural killer cells (CD57+), and immune-accessory cells (CD1+, CD35+) were rare in most cases. In the one case in which cryopreserved tissue was available, most of the intratumoral T-cells belonged to the CD8+ (cytotoxic/suppressor) subtype, and most of the intratumoral T-cells expressed the alpha/beta heterodimer of the T-cell antigen receptor; gamma/delta + T-cells were exceedingly rare. Some of the macrophages/epithelioid cells were found to express activation antigens (interleukin-2 receptor, transferrin receptor, HLA-DR2). Antibodies against placental alkaline phosphatase and pancytokeratin each stained tumor cells in six cases. Virtually no tumor cells were found to express major histocompatibility complex (MHC) Class II antigens. CONCLUSIONS:The immunohistochemical findings concerning the tumor cells and TIL in dysgerminoma of the ovary provide additional evidence of a close relation to seminoma of the testis.

journal_name

Cancer

journal_title

Cancer

authors

Dietl J,Horny HP,Ruck P,Kaiserling E

doi

10.1002/1097-0142(19930415)71:8<2562::aid-cncr2820

subject

Has Abstract

pub_date

1993-04-15 00:00:00

pages

2562-8

issue

eissn

0008-543X

issn

1097-0142

journal_volume

pub_type

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Dysgerminoma of the ovary. An immunohistochemical study of tumor-infiltrating lymphoreticular cells and tumor cells.