Low meprin alpha expression differentiates primary ovarian mucinous carcinoma from gastrointestinal cancers that commonly metastasise to the ovaries.

Abstract:

BACKGROUND:Currently, no specific immunohistochemical markers are available to differentiate primary mucinous epithelial ovarian cancer (MOC) from adenocarcinomas originating at other sites that have metastasised to the ovary, which may have an impact on patient management and prognosis. AIM:To investigate the expression of two intestinal markers, galectin 4 and meprin alpha, in mucinous carcinomas of the ovary and gastrointestinal tract. METHODS:Using immunohistochemical analysis, the expression of galectin 4 and meprin alpha was investigated in 10 MOCs and in 38 mucinous adenocarcinomas of colon, pancreas, stomach and appendix, the most common sites of origin of ovarian metastases. RESULTS:Total cytoplasmic galectin 4 expression was relatively consistent between the different carcinomas. Membranous meprin alpha expression was significantly lower in MOCs compared with gastrointestinal carcinomas. Moreover, meprin alpha expression showed greater discrimination between the ovarian and gastrointestinal carcinomas than the cytokeratins CK7 and CK20, the current standard immunohistochemical markers used to determine the tissue origin of mucinous carcinomas involving the ovaries. CONCLUSIONS:Meprin alpha is a useful additional marker in differentiating primary from secondary mucinous adenocarcinomas of the ovary.

journal_name

J Clin Pathol

authors

Heinzelmann-Schwarz VA,Scolyer RA,Scurry JP,Smith AN,Gardiner-Garden M,Biankin AV,Baron-Hay S,Scott C,Ward RL,Fink D,Hacker NF,Sutherland RL,O'Brien PM

doi

10.1136/jcp.2005.034223

subject

Has Abstract

pub_date

2007-06-01 00:00:00

pages

622-6

issue

6

eissn

0021-9746

issn

1472-4146

pii

jcp.2005.034223

journal_volume

60

pub_type

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