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Comparative immunohistochemical expression of b-catenin, egfr, erbb2, and p63 in adamantinomatous and papillary craniopharyngiomas
Joint Authors
Ishbah, Ghadah E.
Hasan, Amal A.
Source
Journal of the Egyptian National Cancer Institute
Issue
Vol. 27, Issue 3 (30 Sep. 2015), pp.139-145, 7 p.
Publisher
Cairo University National Cancer Institute
Publication Date
2015-09-30
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Topics
Abstract EN
Craniopharyngiomas (CPs) are rare epithelial tumors located mainly in the sellar/ parasellar region.
CPs have been classified into histopathologically, genetically, clinically and prognostically two distinctive subtypes: adamantinomatous and papillary variants.
Aim: To determine the immunohistochemical expression of b-catenin, EGFR, ErbB2, and p63 in adamantinomatous and papillary CPs.
Materials and methods: b-Catenin, EGFR, ErbB2, and p63 immunostaining was performed on paraffin embedded tissue sections of 25 CPs including 18 adamantinomatous craniopharyngioma (ACP) and 7 cases of papillary craniopharyngiomas (PCPs).
Results: 17 cases (94%) of ACP exhibited strong nuclear/cytoplasmic expression of b-catenin.
On the contrary, all cases of PCP showed exclusively membranous expression (P value < 0.0001).
Regarding EGFR, 15 (83%) and 5 cases (71%) of APC and PCP respectively were positive.
On the other hand, only 3 cases (17%) of APC and none of PCP exhibited positivity for ErbB2.
p63 over-expression was observed in 16 cases of ACP (89%) and 6 cases of PCP (86%).
However,the distribution of p63 staining was diffuse in ACP, while in PCP; the staining was mainly restricted to the basal cell layer.
Conclusion: Nuclear accumulation of b-catenin is a diagnostic hallmark of the ACP and is very helpful in the differential diagnosis between both ACP and PCP in the setting of small biopsies.
Moreover, the restricted nuclear b-catenin accumulation in the cohesive cell clusters within the whorl-like areas supports that aberrant b-catenin expression may play a role in the morphogenesis of ACP.
ª 2015 The Authors.
Production and hosting by Elsevier B.V.
on behalf of National Cancer Institute, Cairo University.
This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).
American Psychological Association (APA)
Ishbah, Ghadah E.& Hasan, Amal A.. 2015. Comparative immunohistochemical expression of b-catenin, egfr, erbb2, and p63 in adamantinomatous and papillary craniopharyngiomas. Journal of the Egyptian National Cancer Institute،Vol. 27, no. 3, pp.139-145.
https://search.emarefa.net/detail/BIM-600759
Modern Language Association (MLA)
Ishbah, Ghadah E.& Hasan, Amal A.. Comparative immunohistochemical expression of b-catenin, egfr, erbb2, and p63 in adamantinomatous and papillary craniopharyngiomas. Journal of the Egyptian National Cancer Institute Vol. 27, no. 3 (Sep. 2015), pp.139-145.
https://search.emarefa.net/detail/BIM-600759
American Medical Association (AMA)
Ishbah, Ghadah E.& Hasan, Amal A.. Comparative immunohistochemical expression of b-catenin, egfr, erbb2, and p63 in adamantinomatous and papillary craniopharyngiomas. Journal of the Egyptian National Cancer Institute. 2015. Vol. 27, no. 3, pp.139-145.
https://search.emarefa.net/detail/BIM-600759
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 145
Record ID
BIM-600759