- Expression of Sialosyl Tn Mucin Antigen in Gastric Adenocarcinoma and Its Relationship with Prognostic Factors.
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Sun Hee Chang, Ho Jung Kim, Sun Hee Sung, Hea Soo Koo, Woon Sub Han
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Korean J Pathol. 1999;33(9):695-701.
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 Abstract
- Sialosyl Tn mucin antigen (STn) is a carbohydrate antigen of tumor associated mucin formed by the premature 2~6 sialation of N-acetylgalactosamine. STn has been expressed in several tumor types and showed prognostic significance in colonic carcinoma. The authors evaluated the expression of STn immunohistochemically and correlated its expression with clinicopathologic variables in 100 gastric cancers. In early gastric cancer, STn was expressed in 24 cases out of 50 cases (48%). In advanced gastric cancer, STn was expressed in 48 of 50 (96%). The difference in STn expression between advanced gastric cancer and early gastric cancer was statistically significant.
The difference in STn expression between tumors with lymph node metastasis and those without lymph node metastasis, between tubular adenocarcinoma and signet ring cell carcinoma, and between intestinal type and diffuse type adenocarcinoma was statistically insignificant in early or advanced gastric adenocarcinoma. These results suggest that the STn expression plays a role in the tumor progression in both early and advanced gastric adenocarcinomas.
- Gastrointestinal Polyposis in Koreans: A Nationwide Survey of Clinicopathologic Analysis of 112 Surgically Resected Cases.
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Mee Soo Chang, Hoguen Kim, Woo Ho Kim, Chan Il Park, Eun Kyung Hong, Han Kyeom Kim, In Soo Suh, Byung Kee Kim, Ja June Jang, Woon Sub Han, Hyung Sik Shin, So Young Jin, Dae Young Kang, Yong Il Kim
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Korean J Pathol. 1998;32(6):404-412.
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Abstract
- Gastrointestinal polyposis (GIP) is a rare disease characterized by formation of the numerous polyps in the gastrointestinal tract and presenting several extraintestinal manifestations. Most of the diseases are transmitted in an autosomal dominant pattern. In Korea, the epidemiological study as well as the pathological analysis of the GIP is not well established. We therefore analysed 38 items of GIP using surgically resected specimens. The materials in this study were collected from the 12 institutions and case reports in Korean literature between 1980 and 1991. The clinicopathologic findings were reevaluated by several members of the study group for gastrointestinal pathology. The results are as follows: (1) A total of 112 cases were included in this study: 83 cases were collected from 12 institutions and 29 cases were collected from Korean literature. The cases were classified as familial adenomatous polyposis (FAP), 59 cases; Gardner's syndrome, 3 cases; juvenile polyposis, 12 cases; Peutz-Jeghers syndrome, 35 cases; multiple colonic adenomas, 3 cases. (2) Among 59 cases of FAP, the range of age at operation was 14 to 61 years, and a family history was positive in 25 cases. The number of polyps in colorectum was 100~8,000. Of the 37 cases in which the examination of polyp density was available, 16 cases (43%) showed the highest density in the rectum and the sigmoid colon. The carcinomatous change within polyp(s) was present in 18 cases (31%), and associated advanced single or multiple colonic carcinomas existed in 37 cases (63%). Twenty-six (45%) tumors out of total 58 carcinomas were in the rectum.
Twenty-five patients were evaluated for the upper gastrointestinal lesions, and 11 patients (44%) had pathologic lesions; multiple fundic gland polyps in 3 cases (12%), gastric and duodenal adenomas in 2 cases (8%), gastric adenomas in 2 cases (8%), duodenal adenomas in 2 cases (8%), gastric carcinoma and adenoma in 1 case (4%), gastric carcinoma in 1 case (4%). (3) Among 3 cases of Gardner's syndrome, the range of age at operation was 25 to 31 years, a family history was identified in 2 cases. One case was associated with an advanced colonic carcinoma and carcinomatous change within polyp. Extra gastrointestinal lesions were sebaceous cyst, epidermal cyst, osteoma and desmoid tumor. (4) Among 12 juvenile polyposis, the range of age at operation was 8 to 51 years and 5 patients had a family history. The carcinomatous change within polyp was found in 2 cases (17%) and associated advanced colonic carcinoma was in 4 cases (33%). The associated different type of polyps was tubular adenomas in 9 cases (75%), hyperplastic polyps in 4 cases (33%) and villous adenomas in 2 cases (17%). (5) Among 35 Peutz-Jeghers syndrome, the range of age at first operation was 6 to 42 years, family history was positive in 11 cases. The carcinomatous change within polyp was found in 1 case (3%), and associated advanced colonic carcinoma in 1 case (3%). The epithelial misplacement was observed in 4 cases (11%), and tubular or villous adenomatous feature in 4 cases (11%). In summary, the most frequent GIP for the surgical resection in Korea is FAP and the FAP is associated with high incidence of coexisting advanced and intramucosal carcinomas.
Hamartomatous polyposis syndromes, such as juvenile polyposis and Peutz-Jeghers syndrome are another frequent disease for the surgical resection and are also associated with an increased risk of cancer.
- The Study of Histopathologic Grade, PCNA and AgNORs Staining in the Recurrent Urinary Bladder Cancer.
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Soo Yeon Cho, Woon Sub Han
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Korean J Pathol. 1994;28(6):643-650.
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Abstract
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- The prognosis of transitional cell carcinoma(TCC) of the urinary bladder is related to histopathologic parameters, among which the clinical stage and histopathologic grade are most important prognostic determiantors. Recently the immunohistochemical assessment of proliferating cell nuclear antigen(PCNA) and nucleolar organizer region number(AgNORs) can obtain the PCNA, and AgNORs stainings were studied in 55 the sequential biopsies of 22 recurrent TCCs of the urinary bladder. 6 cases showed the increased changes of grade, of which 5 cases was independently to the change of grade. The AgNORs in 18 cases showed increase in 10 cases. The comparison between PCNA count and AgNORs score according to grade was performed in the changes between grade II and III, both PCNA count and AgNORs score were increased with in crease of grade. However, The change of the PCNA count was stastically significant, but not AgNORs score.
- Fine Needle Aspiration Cytology of Subacute Necrotizing Lymphadenitis: Three Cases Report.
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Soo Yeon Cho, Min Sun Cho, Sung Sook Kim, Hye Soo Koo, Woon Sub Han, Sung Min Chung
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Korean J Cytopathol. 1994;5(1):23-27.
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Abstract
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- Three cases of subacute necrotizing lymphadenitis diagnosed by fine needle aspiration(FNA) of enlarged lymph nodes are reported. The FNA smears contained randomly activated lymphoid cells, necrotic debris and histiocytes. The same patterns were found in subsequently examined excised lymph nodes from these cases. The differential diagnosis of this entity is discussed and the value of preparing FNA cell blocks and accompanying AFB stain with culture is emphasized.
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