- An Approach to Diagnosing Gastrointestinal Stromal Tumors Using Immunohistochemistry of c-kit and PDGFRA with Molecular Analysis.
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Jeong Shik Kim, Jae Hoon Kim, Hyun Jin Oh, In Soo Suh, Jong Gwang Kim, Byung Wook Kang, Wan Sik Yu, Ho Young Chung, Han Ik Bae
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Korean J Pathol. 2010;44(2):173-178.
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DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.2.173
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 Abstract
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- BACKGROUND
Gastrointestinal stromal tumors (GIST) are the most common mesenchymal tumors in the gastrointestinal tract. Recently, many methods for the diagnosis of GIST have been developed including molecular diagnosis.
METHODS
We selected 90 cases of GIST that had presented at Kyungpook National University Hospital between 1998 and 2007. Tissue microarrays were made using core areas of tumor tissues. Immunohistochemical staining for c-kit, protein kinase C-theta, and platelet-derived growth factor receptor alpha (PDGFRA) was done. Direct sequencing of hot spot exonal areas for c-kit and PDGFRA were done using extracted DNAs of all 90 paraffin block tissues.
RESULTS
Among the 90 cases, 83.3% (75/90) were c-kit positive, 16.6% (15/90) were c-kit negative, 93.3% (84/90) were PDGFRA positive, and 6.6% (6/90) cases were PDGFRA negative. Fifteen cases of c-kit negative GIST included 1 case of PDGFRA negative and 5 cases of PDGFRA negative GIST were ckit positive. The one case in which both c-kit and PDGFRA were negative, showed a c-kit mutation in exon 11.
CONCLUSIONS
Combined immunohistochemical staining of c-kit, discovered on GIST 1 (DOG1) and PDGFRA is helpful for the diagnosis of GIST. When all staining tests are negative for immunoreactivity, c-kit mutation analysis for exon 11, 9 should be done. Genotyping of kit and PDGFRA do not need to be examined initially, if it is only for the diagnosis of GIST.
- Manual Liquid-Based Cytology (Liqui-PREPtrade mark) in Breast Fine Needle Aspiration Cytology: Comparison with the Conventional Smears.
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Ji Yun Jeong, Jeong Shik Kim, Young Su Kim, Hye Jung Kim, Ji Young Park
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Korean J Cytopathol. 2008;19(1):34-40.
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DOI: https://doi.org/10.3338/kjc.2008.19.1.34
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Abstract
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- Fine needle aspiration (FNA) cytology of the breast is a useful method for diagnosing breast lesions. Yet making the definite diagnosis with performing FNA is limited by some problems, such as the low cellularity, the poor preservation and the obscuring background. Recent studies have found that liquid-based cytology solves such problems, but it is an expensive method and it is limited by the loss of the background information. The purpose of this study is to compare the Liqui-PREP(TM), a new manual liquid-based method of cytology, and the conventional smears for analyzing breast FNA cytology materials. A total of 31 randomized FNA specimens of breast were studied. In each case, both the conventional smears and the Liqui-PREP(TM) method were performed, and the smears were evaluated for cellularity, cellular preservation, the background, the cytologic features and the architectural arrangement. The cellularity and architectural arrangement were equal for both preparations. The Liqui-PREP(TM) specimens showed better cellular preservation, loss of the obscuring background, no overlapping of cells and a smaller area to screen compared with the conventional smears. Moreover, it has the potential advantages of being able to use the remaining specimens for immunohistochemical study and ploidy analysis, and it can reduce the costs for preparation compared with the other liquid-based methods of cytology. But some background information is lost in the Liqui-PREP(TM) specimens, the same as the other liquid-based methods of cytology. In conclusion, the Liqui-PREP(TM) and conventional smears showed good correlation, but they have their respective advantages and disadvantages. These results suggest that Liqui-PREP(TM) can contribute to making the accurate diagnosis with performing breast FNA cytology when it is used along with other methods.
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Citations
Citations to this article as recorded by  - Liquid-Based Cytology in Fine-Needle Aspirates of the Thyroid and Breast
Ji-Young Kim
The Korean Journal of Pathology.2009; 43(2): 99. CrossRef - Comparison of Liqui-PREP™ and Conventional Preparations in Thyroid Fine Needle Aspiration
Eun Su Park, Eun Yoon Cho, In Gu Do, Soon Jae Kim, Jung Hee Shin, Boo Kyung Han, Young Lyun Oh
The Korean Journal of Pathology.2009; 43(6): 550. CrossRef
- Diffuse Ganglioneuromatosis of Appendix associated with Von Recklinghausen;s Disease.
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Young Su Kim, Sang Chul Nam, Man Hoon Han, Jeong Shik Kim, Ji Yun Jeong, Han Ik Bae
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Korean J Pathol. 2007;41(5):334-336.
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- Gastrointestinal ganglioneuromatosis is a rare neoplastic condition that can occur in association with von Recklinghausen's disease with multiple endocrine neoplasia type II B. The main locations are the ileum, colon, and appendix. We report a case of diffuse ganglioneuromatosis of the appendix associated with a mesenteric and ileocecal plexiform neurofibroma in von Recklinghausen's disease.
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