Estrogen and progesterone receptor expression in uterine and extrauterine leiomyosarcomas: An immunohistochemical study
Applied Immunohistochemistry and Molecular Morphology, ISSN: 1541-2016, Vol: 12, Issue: 4, Page: 338-341
2004
- 79Citations
- 23Captures
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Metrics Details
- Citations79
- Citation Indexes78
- 78
- CrossRef47
- Policy Citations1
- Policy Citation1
- Captures23
- Readers23
- 22
Article Description
The authors have noted anecdotal cases of extrauterine leiomyosarcomas (LMS) with estrogen receptor (ER) and progesterone receptor (PR) immunoreactivity. However, there are few studies that have compared ER and PR immunoexpression in LMS of uterine and extrauterine origin. The authors obtained a representative formalin-fixed, paraffin-embedded tissue block from cases of uterine LMS (n = 15) and extrauterine LMS (n = 16) from the archives of the Cleveland Clinic Foundation and performed immunohistochemical staining for ER and PR. Staining was evaluated by 2 observers in a semi-quantitative manner using the following scale: 0, no nuclear staining; 1+, 1 to 25% of nuclei stained; 2+, 26 to 50% of nuclei stained; 3+, 51 to 75% of nuclei stained; 4+, 76 to 100% of nuclei stained. The majority of uterine LMS stained for ER (13 of 15, 87%), PR (12 of 15, 80%), or both ER and PR (12 of 15, 80%), with most cases showing 3+ or 4+ positive staining. For the extrauterine LMS cases, staining for ER was seen in 4 of 16 cases (25%), staining for PR was observed in 2 of 16 cases (13%), and staining for both ER and PR was seen in 2 of 16 cases (13%). One extrauterine LMS showed 4+ coexpression of ER and PR, but the remaining extrauterine cases showed only 1+ ER and/or PR immunoreactivity. These data suggest that most uterine LMS coexpress ER and PR, and most extrauterine LMS do not stain for these antigens. However, a subset of extrauterine LMS are ER and/or PR immunoreactive. This raises the possibility that hormonal manipulation may be beneficial in the treatment of these therapeutically recalcitrant tumors.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=10044260864&origin=inward; http://dx.doi.org/10.1097/00129039-200412000-00008; http://www.ncbi.nlm.nih.gov/pubmed/15536333; http://journals.lww.com/00129039-200412000-00008; https://dx.doi.org/10.1097/00129039-200412000-00008; https://insights.ovid.com/article/00129039-200412000-00008
Ovid Technologies (Wolters Kluwer Health)
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