Journal of Pathology and Translational Medicine

Jung Yong Lee

5 Articles

An Analysis of p53, bcl-2 and Ki-67 Expressions, and Apoptosis in Rectal Cancer: Their Correlation with the Tumor Response after Preoperative Radiochemotherapy.: Jinyoung Yoo, Su Zy Kim, Hyeon Min Cho, Sung Whan Kim, Hyung Min Chin, Jung Yong Lee, Jun Ki Kim, Seok Jin Kang, Chung Soo Chun, Chang Suk Kang; Korean J Pathol. 2005;39(4):222-228.

Abstract PDF: Background
: Preoperative radiochemotherapy (RCT) has been administered for locally advanced rectal cancer to increase the therapeutic benefits, and to preserve the sphincter in low-lying tumors, however, tumor responses after RCT are variable. Methods : Apoptotic index (AI), and expressions of Ki-67, p53 and bcl-2 were analyzed in pretreatment biopsies from 69 patients with rectal cancer by immunohistochemistry. Tumor response was graded in surgically resected specimens by using a three-scale grading system: no response (NR), partial remission (PR) and complete remission (CR). Results : CR was identified in 19 cases (28%), PR in 24 cases (35%), and NR in 26 cases (38%) of 69 cases. p53 protein was expressed in 49 cases (71%), whereas bcl-2 was in 42 cases (61%). The pretreatment Ki-67 labeling index was 65.4+/-3.4%. The tumor response was not associated with any of these markers. Tumors with CR/PR showed a higher AI (0.84+/-.84%/0.66+/-.52%) than that of tumors with NR (0.58+/-0.54%). There was a significant correlation between tumor response and the histologic differentiation (p=0.008) or recurrence (p=0.039). Conclusions : The AI revealed a tendency to increase in tumors with CR/PR, while expressions of p53 and bcl-2, and Ki-67 labeling index had little direct association with tumor response.

Loss of Heterozygosity on Chromosome 9p21, 17p13 and 3p in Human Astrocytic Tumor.: Youn Soo Lee, Chang Suk Kang, Seung Myung Dong, Jung Yong Lee, Sang In Shim, Byung Kee Kim; Korean J Pathol. 2001;35(4):330-337.

Abstract PDF: BACKGROUND
The purpose of this study was to determine the genetic abnormalities of chromosomes 9p21, 17p13.1, 3p25 and 3p14.2 in the development and progression of astrocytic tumors.
METHODS
We performed loss of heterozygosity (LOH) analysis in 41 astrocytic tumors, including 20 astrocytomas, 11 anaplastic astrocytomas and 10 glioblastomas, and correlated the results of LOH at different histopathologic grades. LOH was determined by multiplex polymerase chain reaction analysis of the DNA, which was extracted by microdissection.
RESULTS
LOH of 9p21 was found in 55.6% of astrocytomas, 54.6% of anaplastic astrocytomas and 100.0% of glioblastomas. LOH of 17p13.1 was found in 21.4% of astrocytomas, 28.6% of anaplastic astrocytomas, and 66.7% of glioblastomas. LOH of 3p25 was found in 37.5% of astrocytomas, 16.7% of anaplastic astrocytomas, and 14.3% of glioblastomas. LOH of 3p14.2 was found in 16.7% of astrocytomas, 40.0% of anaplastic astrocytomas, and 42.9% of glioblastomas. LOH on chromosome 9p21 and 17p13.1 was closely related with the histopathologic grades.
CONCLUSIONS
These results may suggest that LOH of 9p21, 17p13.1, 3p25 and 3p14.2 involves an early event of astrocytoma development and accumulates during progression. LOH of 3p25 may be involved in the tumorigenesis of astrocytoma. Identification of these LOH may illuminate the stepwise pathogenesis of astrocytic tumors and predict the possibility of malignant transformation.

Primary Ovarian Leiomyosarcoma: A case report.: Won Sang Park, Seong Beom Lee, Jung Yong Lee, Sang Ho Kim, Choo Soung Kim; Korean J Pathol. 1996;30(6):548-550.

Abstract PDF: Primary leiomyosarcoma is a rare tumor of the ovary. We experienced a case of primary ovarian leiomyosarcoma in a 68 year old woman. Microscopically, the tumor was characterized by interlacing bundles of plump spindle cells that showed immunoreactivity for alpha-smooth muscle actin, pleomorphic multinucleated giant cells and an increased mitotic rate. Ultrastructural features included abundant smooth muscle type filaments and irregular bodies. Consequently, this case has led us to propose ultrastructural and immunohistochemical criteria for primary ovarian leiomyosarcoma.

Acardiac Fetus with Encephalocele: A case report.: Seong Beom Lee, Won Sang Park, Ki Hwa Yang, Jong Chul Shin, Jung Yong Lee, Sang Ho Kim, Choo Soung Kim; Korean J Pathol. 1994;28(6):678-681.

Abstract PDF: The acardiac fetus is a rare type of fetal monster in which, as the name implies, the heart is completely absent. Acardius occurs only in a pair monozygotic twin, and shows various other defects in addition to the absence of the heart. Our autopsy case is acardiac anceps. He weighed 1,980 gm and the height was 33 cm. The brain is poorly developed, 60 gm in weight and similar to reversed snowman (3.5x2.8x2.8, 1.5x1.5x1.3 cm). Encephalocele, 6 cm in diameter, was communicated with the brain by a tract which contains nervous tissue and primitive choroid plexus. The upper extremities were absent, while the vertebrae and lower extremities were relatively well developed. The heart, lungs, stomach, liver, and spleen were absent, but the kidney, genital organs and urinary bladder were present. The intestine was seperated into two segments which were blindly ended, 32 cm and 15 cm in length, respectively.

Occult Hepatocellular Carcinoma Metastasized to Heart: A case report.: Nam Jin Yoo, Jung Yong Lee, Seok Jin Gang, Byung Kee Kim, Sun Moo Kim; Korean J Pathol. 1986;20(3):359-361.

Abstract: We have experienced a case of occult hepatocellular carcinoma metastasized to the heart in a 41 year old female. The hepatocellular carcinoma invaded the hepatic vein, grew in a snakelike fashion up the inferior vena cava and reached the right atrium. Ultrastural examination in this case confirmed the hepatocellular origin of the tumor.

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