- Microsatellite Instability in Endometrial Adenocarcinomas of Young Women.
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Hyang Im Lee, Ga Won Choi, Jene Choi, Kyu Rae Kim
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Korean J Pathol. 2008;42(4):202-207.
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- BACKGROUND
The correlation between microsatellite instability (MSI) and the prognosis of patients with endometrial carcinomas is controversial. The endometrial carcinomas in the young adult group usually have an excellent prognosis, and these tumors might have a different frequency of MSI compared with those in old women. Further, the pathogenetic mechanisms of the two groups might be different. We investigated the frequency of MSI in the endometrial cancers of patients who were under the age of 40 and we correlated the frequency with other prognostic factors.
METHODS
MSI analyses were performed using 5 primers (BAT25, BAT26, D2S123, D5S346 and D17S250) and with using the genomic DNA obtained from the paraffin embedded tumor and the paired normal tissues.
RESULTS
All 23 cases we examined exhibited endometrioid adenocarcinomas, and most of them were of the low international federation of gynecologists and obstetricians (FIGO) stage (stage I: 22, IIB: 1); 78% were microsatellite stable and 22% were MSI-low; an abnormal peak was present at only one marker, and any case of MSI-high was not identified. The FIGO stages of the 5 MSI-low cases were variable.
CONCLUSIONS
The frequency of MSI in the endometrial cancers of young patients is not significantly different from the frequencies reported for all age groups in the previous studies, MSI-low does not seem to be related to the other poor prognostic parameters, although the number of cases we studied is insufficient to draw any firm conclusion.
- Fine Needle Aspiration Cytology of the Plasmablastic Lymphoma in Human Immunodeficiency Virus(HIV) Negative Patient: A Case Report.
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Hyang Im Lee, Hyun Ryung Koo, Eun Mee Han, Gyungyub Gong, Chulwon Suh, Min Hee Ryu, Yoon Goo Kang, Chan Jeong Park, Jooryung Huh
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Korean J Cytopathol. 2005;16(1):47-51.
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- Plasmablastic lymphoma(PBL) is a recently described aggressive B-cell neoplasm, which usually manifests as a localized disease of the oral mucosa in individuals infected with human immunodeficiency virus(HIV). Recently, we encountered a case of plasmablastic lymphoma manifesting in the left maxillary sinus and cervical lymph node of a previously healthy HIV-negative man, 48 years of age. we conducted a fine-needle aspiration smear of the cervical lymph node, and this was found to be highly cellular with numerous large cells exhibiting eccentrically positioned nuclei, prominent nucleoli, and moderate quantities of basophilic cytoplasm. A biopsy of the mass in the maxillary sinus evidenced diffuse growth of similar plasmablastic cells. These tumor cells were negative for the leukocyte common antigens, CD20, CD3, CD30, and EMA. However, the cells tested positive for CD79a and CD138/syndecan-1. The tumor cells also exhibited L-light-chain restriction. The Ki-67 proliferation index was measured at almost 100%. The patient was diagnosed with plasmablastic lymphoma. After three cycles of combination chemotherapy and radiotherapy, the patient went into complete remission, and currently remains in this state.
- Mixed Ductal-Endocrine Carcinoma of the Pancreas: A Case Report.
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Ok Jun Lee, Yong Mee Cho, Hyang Im Lee, Duck Jong Han, Jae Y Ro
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Korean J Pathol. 2004;38(5):353-356.
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- Mixed ductal-endocrine carcinoma of the pancreas is composed of ductal and endocrine carcinoma components and each component makes up a significant proportion in the primary tumor as well as in the tumor of metastatic sites. Mixed ductal-endocrine pancreatic carcinoma is exceptionally rare and, to our knowledge, only five cases have been reported in the literature. Recently we experienced a case of mixed ductal-endocrine pancreatic carcinoma with regional lymph node and hepatic metastases in a 63-year-old woman. Here, we report a case of mixed ductal-endocrine pancreatic carcinoma with a review of the literature.
- Expression of p27Kip1 Protein in Colorectal Adenocarcinoma.
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Hyang Im Lee, Duck Hwan Kim, Eun Sook Nam, Hye Rim Park, Seoung Wan Chae, Chul Jae Park, Jeong Rye Kim, Hyung Sik Shin
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Korean J Pathol. 2000;34(2):132-137.
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- p27Kip1 has been recognized as a negative regulator of cell cycle. Reduced level of p27 expression is associated with development and aggressiveness of several human tumors. To investigate the role of p27Kip1 on progression of colorectal adenocarcinoma, we studied 40 cases of human colorectal adenocarcinomas for expression of p27Kip1 protein using an immunohistochemical method, and compared these results with known prognostic parameters of colorectal adenocarcinoma. Among 40 cases of colorectal adenocarcinomas, p27Kip1 expression was detected in the nuclei of tumor cells in 14 cases (35%). The expression rate of p27Kip1 protein was significantly lower in the cases with lymph node metastasis (25.8%) than in those without lymph node metastasis (66.6%) (p<0.05).
But it did not correlate with other parameters such as tumor size, histologic grade, vascular invasion, and Ki-67 labeling index. The results suggest that reduced expression of p27Kip1 protein plays a role in biologically aggressive behavior of colorectal adenocarcinoma.
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