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- PLAG1, SOX10, and Myb Expression in Benign and Malignant Salivary Gland Neoplasms
- Ji Hyun Lee, Hye Ju Kang, Chong Woo Yoo, Weon Seo Park, Jun Sun Ryu, Yuh-Seog Jung, Sung Weon Choi, Joo Yong Park, Nayoung Han
- J Pathol Transl Med. 2019;53(1):23-30. Published online November 14, 2018
- DOI: https://doi.org/10.4132/jptm.2018.10.12
- 8,560 View
- 352 Download
- 24 Web of Science
- 28 Crossref
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Abstract
PDF - Background
Recent findings in molecular pathology suggest that genetic translocation and/oroverexpression of oncoproteins is important in salivary gland tumorigenesis and diagnosis. Weinvestigated PLAG1, SOX10, and Myb protein expression in various salivary gland neoplasm tissues.
Methods
A total of 113 cases of surgically resected salivary gland neoplasms at the NationalCancer Center from January 2007 to March 2017 were identified. Immunohistochemical stainingof PLAG1, SOX10, and Myb in tissue samples was performed using tissue microarrays.
Results
Among the 113 cases, 82 (72.6%) were benign and 31 (27.4%) were malignant. PLAG1 showednuclear staining and normal parotid gland was not stained. Among 48 cases of pleomorphicadenoma, 29 (60.4%) were positive for PLAG1. All other benign and malignant salivary glandneoplasms were PLAG1-negative. SOX10 showed nuclear staining. In normal salivary gland tissuesSOX10 was expressed in cells of acinus and intercalated ducts. In benign tumors, SOX10 expressionwas observed in all pleomorphic adenoma (48/48), and basal cell adenoma (3/3), but not inother benign tumors. SOX10 positivity was observed in nine of 31 (29.0%) malignant tumors.Myb showed nuclear staining but was not detected in normal parotid glands. Four of 31 (12.9%)malignant tumors showed Myb positivity: three adenoid cystic carcinomas (AdCC) and onemyoepithelial carcinoma with focal AdCC-like histology.
Conclusions
PLAG1 expression is specificto pleomorphic adenoma. SOX10 expression is helpful to rule out excretory duct origin tumor,but its diagnostic value is relatively low. Myb is useful for diagnosing AdCC when histology isunclear in the surgical specimen. -
Citations
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- Expression of p53 Protein and Ki-67 in Atypical Ductal Hyperplasia, Ductal Carcinoma in Situ, and Microinvasive Ductal Carcinoma of the Breast.
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- 2,012 View
- 22 Download
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Abstract
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- Mutation of the p53 gene is one of the most common genetic alterations in invasive breast carcinoma. However, it is unclear that the mutation usually occurs in noninvasive breast lesions. It might be expected that there is a correlation between histologic progression of breast lesions and proliferative rate. We investigated the expression of p53 protein and Ki-67 labelling index (LI) using immunohistochemistry in 16 ductal carcinoma in situ with microinvasion (DCIS-Mi), 56 DCIS, 15 atypical ductal hyperplasia (ADH), and 7 intraductal hyperplasia (IDH). Expression of p53 protein was detected in 33.9% of DCIS and 56.3% of DCIS-Mi and was confined exclusively in Van Nuys DCIS group 2 and 3. In ADH and IDH, no expression of p53 protein was found. There was no significant correlation between Van Nuys DCIS groups and Ki-67 LI. In conclusion, p53 mutation may be involved in the neoplastic progression from ADH to DCIS and is directly related to high nuclear grade and associated necrosis of DCIS.
- Usefulness of Frozen Section Examination of Core Needle Biopsy in the Breast Carcinoma.
- Yee Jeong Kim, Yi Kyeong Chun, Sung Ran Hong, Hy Sook Kim, Sung Su Kang, Ji Hyun Lee, Sung Kong Lee, Hye Sun Kim
- Korean J Pathol. 2002;36(3):163-166.
- 1,726 View
- 16 Download
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Abstract
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- BACKGROUND
Core needle biopsy (CNB) is widely used as the initial sampling method for breast cancer. And because frozen section (FS) diagnosis is rapid and reliable, we studied the diagnostic agreement between the diagnosis of FS of CNB and final diagnosis after surgery to evaluate the diagnostic accuracy of the FS of CNB.
METHODS
Of 409 patients who were preoperatively diagnosed by FS of CNB and who underwent final surgery from 1996 through 2000, 24 cases were found to be ductal carcinoma in situ (DCIS) and 385 cases invasive carcinoma (IC). The diagnoses of FS of CNB were compared with final diagnoses.
RESULTS
The diagnostic accuracy of carcinoma is 63.6% for DCIS and 86.9% for invasive carcinoma. Five cases (1.2%) could not be diagnosed because of material insufficiency for diagnosis. Twenty two cases (5.4%) were diagnosed as benign on FS, among which 20 (90.9%) were misdiagnosed by sampling error. Twenty seven cases (6.7%) were deferred on FS, 4 of these cases were DCIS, 5 were invasive lobular carcinoma (ILC), the rest displayed low nuclear grades or marked freezing artifacts.
CONCLUSIONS
The diagnostic accuracy of FS of CNB is very high except for cases of ILC and low grade DCIS. Considering the advantage of rapid evaluation, more definitive diagnosis, familiarity by pathologists and availability of ancillary study, FS of CNB is very useful method as the preoperative evaluation.
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