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Impact of p53 immunostaining in predicting advanced or recurrent placental site trophoblastic tumors: a study of 12 cases.

Abstract：

OBJECTIVES:To identify an indicator that can predict tumor cell spread beyond the uterine corpus. METHODS:We studied clinicopathology and immunohistochemistry of 12 cases of PSTT. Two cases of epithelioid trophoblastic tumor (ETT) were included as reference cases. For immunohistochemistry, antibodies against Ki-67, p53, human chorionic gonadotropin (hCG), human placental lactogen (hPL), carcinoembryonic antigen (CEA, polyclonal antibodies; pCEA), carcinoembryonic antigen-related cellular adhesion molecule 1 (CEACAM1), and bcl-2 were used. PSTT cases were divided as confined and non-confined groups (CG and NCG, respectively). CG consisted of stage I cases with no evidence of recurrence during the follow-up, while NCG consisted of either advanced (stage II or higher) or recurrent stage I lesions. RESULTS:Age, the interval from the latest pregnancy, serum hCG/hPL levels, tumor size, mitotic figures, Ki-67 labeling indices, and bcl-2 did not discriminate NCG from CG. CEACAM1 and CEA-related antigens as determined by polyclonal anti-CEA antibodies were specifically stained in PSTT cells, but they could not discriminate groups. p53 was positive in PSTT cells in NCG (6/6, 100%), while it was positive in only one case of CG (1/6, 16.7%), indicating a possible usefulness of p53 immunostaining in predicting an invasive or recurrent propensity of PSTT cells (p=0.015). CONCLUSIONS:This finding also suggests the importance of p53 function in the biology of PSTT cells.

journal_name

Gynecol Oncol

journal_title

Gynecologic oncology

authors

Nagai Y,Kamoi S,Matsuoka T,Hata A,Jobo T,Ogasawara T,Aoki Y,Ohira S,Okamoto T,Nakamoto T,Kanda K,Matsui H

doi

10.1016/j.ygyno.2007.04.025

subject

Has Abstract

pub_date

2007-09-01 00:00:00

pages

446-52

issue

3

eissn

0090-8258

issn

1095-6859

pii

S0090-8258(07)00293-4

journal_volume

106

pub_type

杂志文章

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