- Stromelysin-3 Expression in Squamous Intraepithelial Lesions and Invasive Squamous Cell Carcinoma of the Uterine Cervix.
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Yoo Duk Choi, Eun Jung Park, Jong Hee Nam, Chang Soo Park
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Korean J Pathol. 2002;36(6):389-393.
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 Abstract
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- BACKGROUND
Matrix metalloproteinase (MMP) plays an important role in the invasion and metastasis of epithelial neoplasms. Currently, detected stromelysin-3 (ST-3) (MMP-11) is thought to be associated with invasiveness in epithelial neoplasms. However, the study of the expression of stromelysin-3 in the uterine cervix is yet to be delineated.
METHODS
Stromelysin-3 expression in cervical invasive squamous cell carcinoma (SCC) and in squamous intraepithelial lesions (SIL) having potentiality to become invasive was studied by immunohistochemical analysis. We examined the correlation between ST-3 expression and the histopathological parameters of the invasive carcinoma, including growth pattern, lymph node involvement, and degrees of differentiation.
RESULTS
The stromelysin expression rates were as follows; 8.3% in low grade SIL (LSIL), 18.9% in High grade SIL (HSIL), and 75.6% in SCC. A statistical difference in the expression difference was exhibited only between invasive SCC and SIL, but not between LSIL and HSIL, even though HSIL showed a higher expression rate than LSIL. No significant association was found in invasive SCC between ST-3 expression and histopathological parameters.
CONCLUSIONS
ST-3 expression is associated with tumor invasiveness in squamous lesions of the uterine cervix and not with histopathological parameters in invasive SCC.
- Chordoid Glioma: A Report of Two Cases.
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Eun Jung Park, Hyun Sik O, Min Cheol Lee
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Korean J Pathol. 2002;36(5):357-361.
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Abstract
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- Chordoid glioma mainly occurs in the third ventricle, pineal gland, hypothalamus, and suprasella. We report two cases of chordoid gliomas of the third ventricles in adult males.
Histologically, the tumors consisted of cords and clusters of oval to polygonal epitheliod cells with abundant cytoplasm. The backgrounds of the tumor show mucinous and lymphoplasmacytic infiltrates. Immunohistochemically, the tumor cells were positive for glial fibrillary acidic protein and negative for epithelial membrane antigen, cytokeratin and neurofilament protein. Histopathologic diagnosis of chordoid glioma should be made judiciously by differentiating them from other chordoid or epithelial tumors of the central nervous system.
- Clonality Study in Carcinosarcomas and Malignant Mixed Epithelial Tumors.
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Eun Jung Park, Yoo Duk Choi, Jong Hee Nam, Min Cheol Lee, Chang Soo Park, Sang Woo Juhng, In Seon Choi, Kyung Hee Kim, Chan Choi
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Korean J Pathol. 2002;36(4):205-211.
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Abstract
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- BACKGROUND
Tumors are usually considered to be clonal progeny of single transformed cells. Carcinosarcomas and malignant mixed epithelial tumors are examples where controversies exist regarding the singularity or multiplicity of their cell of origin.
METHODS
The authors examined the clonality of carcinosarcomas (7 cases) and malignant mixed epithelial tumor (5 cases) in female patients by X-chromosome inactivation as a marker. Each component of the tumors were picked up by the laser capture microscope. The polymorphic exon 1 CAG trinucleotide repeat in the X-linked human androgen receptor (HUMARA) gene was amplified by a polymerase chain reaction before and after treatment of the methylation-sensitive endonuclease HpaII.
RESULTS
Eleven cases were informative for clonality determination. Six out of seven carcinosarcomas and three out of four malignant mixed epithelial tumors revealed the same patterns of X-chromosome inactivation, which suggests that they are monoclonal. In contrast, the patterns of X-chromosome inactivation were different between the two tumor components in each cases of carcinosarcoma and malignant mixed epithelial tumor, indicating that they are of polyclonal origin.
CONCLUSIONS
These observations show that although most of carcinosarcomas and malignant mixed epithelial tumors are of monoclonal origin, some of them are of polyclonal origin.
This finding suggests that these tumors are genuinely polyclonal, and that they originated in the neoplastic transformation of more than one somatic cells
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