Journal of Pathology and Translational Medicine

Yoon Hee Lee

6 Articles

A Case of Ovarian Microinvasive Mucinous Carcinoma and Co-existent Angiosarcoma.: Jin Hyung Heo, Yoon Hee Lee, Gwang Il Kim, Tae Heon Kim, Haeyoun Kang, Hee Jung An, Bo Sung Yoon, Seok Ju Seong, Hyun Park, Ji Young Kim; Korean J Pathol. 2011;45(1):96-100.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.1.96

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Primary ovarian angiosarcoma is very rare with only 27 cases reported so far in the medical literature. We report here on a rare case of ovarian microinvasive mucinous carcinoma that was coexistent with angiosarcoma in a 54-year-old woman. The tumor was a 26x19x10 cm-sized multilocular cystic mass with a 4x3 cm-sized solid hematoma-like nodule in the center. Microscopically, it was composed mostly of mucinous tumor of various grades from borderline to microinvasive carcinoma. The hematoma-like area turned out to be an angiosarcoma, composed of pleomorphic cells that formed slit-like spaces, spindle cells that formed short fascicles and anastomosing vascular channels with atypical endothelial cells. All these cells were positive for CD31, CD34 and factor VIII-related antigen. The patient developed peritoneal and pleural metastases, which were angiosarcoma and mucinous carcinoma, respectively. We believe this case is only the fourth example of an ovarian collision tumor of angiosarcoma and surface epithelial tumor.

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Tumor to Tumor Metastasis: A Case Report of Metastatic Angiosarcoma to an Ovarian Brenner Tumor and Review of the Literature
Bilge Dundar, Audai Alrwashdeh, Laila Dahmoush
International Journal of Gynecological Pathology.2023; 42(2): 176. CrossRef
Collision Tumors in Ovary: Case Series and Literature Review
Borges A, Loddo A, Martins A, Peiretti M, Fanni D, Djokovic D
Journal of Surgical Oncology.2019; : 1. CrossRef
Angiosarcoma Arising in Ovarian Mucinous Tumor: A Challenge in Intraoperative Frozen Section Diagnosis
Surapan Khunamornpong, Jongkolnee Settakorn, Kornkanok Sukpan, Tip Pongsuvareeyakul, Sumalee Siriaunkgul
Case Reports in Pathology.2016; 2016: 1. CrossRef
Impact of body burden of pesticide residues on the reproductive tract of buffalo
KARANPREET KAUR, SARVPREET SINGH GHUMAN, OPINDER SINGH, JASBIR SINGH BEDI, JATINDER PAUL SINGH GILL
The Indian Journal of Animal Sciences.2016;[Epub] CrossRef

Solid Variant of Mammary Adenoid Cystic Carcinoma.: Ji Eun Kwon, Yoon Hee Lee, Ju Yeon Pyo, Sang Kyum Kim, Byeong Woo Park, Woo Ick Yang; Korean J Pathol. 2007;41(6):424-426.

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Abstract PDF: Adenoid cystic carcinoma (ACC) is a rare type of breast carcinoma and this tumor makes up less than 0.1% of all mammary carcinomas; ACC is known to show a relatively favorable prognosis. Among a variety of microscopic growth patterns of mammary ACC, a solid variant is the rarest and this can cause diagnostic difficulties. We present here a case of a solid variant of mammary ACC that occurred in the right breast of a 40-year-old woman who was initially diagnosed with invasive ductal carcinoma. We discuss the histological and clinical characteristics of this case.

Multiple Glomus Tumors of the Ankle with Prominent Intranuclear Pseudoinclusions.: Jae Yeon Seok, Se Hoon Kim, Tae jung Kwon, Jieun Kwon, Yoon Hee Lee, Kyoo Ho Shin, Woo Ick Yang; Korean J Pathol. 2007;41(5):337-342.

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Abstract PDF: Glomus tumors are neoplasms that are composed of modified smooth muscle cells of the glomus body. Here, we report a case of multiple glomus tumors of the ankle that showed various histologic types, including the solid type (glomus tumor proper) and angiomatous type (glomangioma). The tumor cells observed in this case also showed prominent intranuclear inclusions, which has not yet been reported in glomus tumors. Ultrastructural examination demonstrated that the nuclear inclusions were not true inclusion bodies but were intranuclear cytoplasmic pseudoinclusions formed by cytoplasmic invaginations that formed as a result of the deep and complex nuclear contours.

Vimentin and Survivin Expression Rates as Prognostic Factors in Medulloblastoma.: Jae Yeon Seok, Se Hoon Kim, Yoon Hee Lee, Jieun Kwon, Tai Seung Kim; Korean J Pathol. 2007;41(2):87-94.

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Abstract PDF: BACKGROUND
A medulloblastoma is a primitive neuroepithelial tumor of the cerebellum that occurs in children and metastasizes through the cerebrospinal fluid. It is highly malignant and invasive, and the 5-year survival rate is only 60%. Surgical resection techniques, radiation, and chemotherapy have improved the overall survival but the patients suffer life-long cognitive dysfunctions or endocrine abnormalities as the side effects of treatment. Therefore it is essential to identify prognostic markers to determine the appropriate treatment strategy in order to minimize the side effects.
METHODS
This study evaluated the immunohistochemical differentiation and survival rate with synaptophysin, glial fibrillary acidic protein, epithelial membrane antigen, vimentin and primitive neuroepithelial marker nestin of 55 paraffin-embedded medulloblastomas, using a tissue microarray. The expression of survivin, the apoptotic inhibitor, and the survival rate with regard to the proliferation index of Ki-67 were also investigated.
RESULTS
The group testing positive to vimentin, a mesenchymal differentiation marker, had a worse prognosis and there was a strong correlation between vimentin expression and nestin expression. Patients with a survivin expression rate >35% had a significantly poorer clinical course and there was a correlation between the survivin expression rate and Ki-67 expression rate.
CONCLUSION
In conclusion, vimentin and survivin are negative prognostic markers in medulloblastomas.

PAX2 Expression in Renal Dysplasia.: Yoon Hee Lee, Woo Hee Jung, Soon Won Hong, Hyeon Joo Jeong; Korean J Pathol. 2007;41(2):69-78.

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Abstract PDF: BACKGROUND
Renal dysplasia is the abnormal development of the kidney. The condition is usually detected in childhood along with other urinary tract anomalies, but can remain unnoticed until adulthood. It was recently reported that a PAX2 gene mutation plays a major role in the development of renal dysplasia. The aim of this study was to examine the expression of PAX2 in dysplastic kidneys of children and adults.
METHODS
A total of 30 cases diagnosed with renal dysplasia after a nephrectomy were examined. PAX2 expression was evaluated using immunohistochemistry. Apoptosis was detected using an Apop Tag detection kit.
RESULTS
In the dysplastic kidneys, there was strong PAX2 expression in the epithelia of the primitive ducts in both children and adults, but the degree was significantly lower in adults (p=0.007). However, the mesenchyme surrounding the primitive ducts of children showed stronger staining for the smooth muscle actin antibody and trichrome than the adults. The apoptosis index was significantly higher in the primitive duct epithelia than in the surrounding normal collecting duct epithelia (p=0.000).
CONCLUSIONS
PAX2 is overexpressed in the primitive ducts of renal dysplasia, which is sustained until adulthood and is associated with increased apoptosis. However, a decrease in PAX2 expression in the dysplastic epithelia and mesenchymal cuff of adults suggest a gradual regression of the dysplastic elements with time.

The Effects of Ginsenoside Rb1 on the Apoptosis and the Production of Nitric Oxide in Rat C6 Glioma Cells.: Joo Hyeon Park, Yoon Hee Lee, Ku Seong Kang, Soo Kyoung Lee, Sun Zoo Kim, Ji Young Park, Eun Kyoung Kwak, Yoon Kyung Sohn; Korean J Pathol. 2004;38(1):1-7.

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Abstract PDF: BACKGROUND
Ginsenosides, the extract of Panax ginseng, exert various pharmacological effects such as anticancer activity by the mechanism that is not yet defined. In this study, we proposed that the anticancer effect of ginsenoside Rb1 is related to tumor cell apoptosis and ginsenoside Rb1 induces the tumor cell apoptosis via the nitric oxide (NO) production.
METHODS
Rat C6 glioma cells were activated by treating with lipopolysaccharide (LPS), interferon (IFN)-gamma , and tumor necrosis factor (TNF)-alpha on the culture medium to investigate the effects of ginsenoside Rb1.
RESULTS
Compared with C6 glioma cells treated with LPS/IFN-gamma/TNF-alpha, C6 glioma cells treated with LPS/IFN-gamma/TNF-alpha/ginsenoside Rb1 showed marked increase in the NO production and apoptosis. Ginsenoside Rb1 induces the NO production in C6 glioma cells in dose-dependent manner. When C6 glioma cells treated with LPS/IFN-gamma/TNF-alpha/ginsenoside Rb1 were incubated with the specific inhibitor of iNOS, S-Methyl-2-thiopseudoureasulfate (SMT), both NO production and apoptosis in C6 glioma cells was significantly decreased. Ginsenoside Rb1 induced the expression of iNOS mRNA and iNOS protein in C6 glioma cells.
CONCLUSIONS
These results suggest that the induction of iNOS expression and subsequent

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