Abstract
Endoscopic mucosal resection (EMR) has been standardized for the treatment of intestinal type of intramucosal gastric carcinomas, and careful histological examination of the resected specimen is important for further treatment. To evaluate the diagnostic utility of p53 expression in gastric EMR samples, using immunohistochemical staining, we examined 24 gastric carcinomas (22 intestinal types and two diffuse types) and 20 adenomas removed by EMR. Intestinal type of adenocarcinomas revealed strong p53 expression in 13 cases (59%), weak in four cases (18%), and negative in five cases (23%). Resection margins of 11 carcinomas were involved in the carcinoma cells, which showed the same p53 expression pattern with main carcinoma cells. Squeezed carcinoma cells, remaining in resection margins, were definitely identified by strong p53 expression in seven cases of which the main tumor strongly expressed p53. Microscopic in situ carcinoma could be easily detected in p53 immunostaining. Multifocal involvement and submucosal invasion of carcinomas could be demarcated easily and definitely by strong p53 expression of carcinoma cells. All adenomas showed diffuse weak p53 expression. The difference of p53 expression (p< 0.001) could be used as a differential diagnosis between adenomas and carcinomas. According to these results, we propose that for careful histological examination in hospital diagnosis, both histological evaluation and p53 immunostaining are important diagnostic parameters in EMR samples of the intestinal type of gastric carcinomas.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 412-416 |
| Number of pages | 5 |
| Journal | Journal of Korean Medical Science |
| Volume | 14 |
| Issue number | 4 |
| State | Published - Aug 1999 |
| Externally published | Yes |
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Keywords
- Adenoma, gastric
- Early gastric carcinoma
- Immunohistochemistry
- Protein p53
- Surgical procedure, endoscopic, mucosal resection
ASJC Scopus subject areas
- Medicine(all)
Cite this
Diagnostic p53 expression in gastric endoscopic mucosal resection. / Cho, Jeong Hee; Roe, Im Hwan; Jin, Young Joo.
In: Journal of Korean Medical Science, Vol. 14, No. 4, 08.1999, p. 412-416.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Diagnostic p53 expression in gastric endoscopic mucosal resection
AU - Cho, Jeong Hee
AU - Roe, Im Hwan
AU - Jin, Young Joo
PY - 1999/8
Y1 - 1999/8
N2 - Endoscopic mucosal resection (EMR) has been standardized for the treatment of intestinal type of intramucosal gastric carcinomas, and careful histological examination of the resected specimen is important for further treatment. To evaluate the diagnostic utility of p53 expression in gastric EMR samples, using immunohistochemical staining, we examined 24 gastric carcinomas (22 intestinal types and two diffuse types) and 20 adenomas removed by EMR. Intestinal type of adenocarcinomas revealed strong p53 expression in 13 cases (59%), weak in four cases (18%), and negative in five cases (23%). Resection margins of 11 carcinomas were involved in the carcinoma cells, which showed the same p53 expression pattern with main carcinoma cells. Squeezed carcinoma cells, remaining in resection margins, were definitely identified by strong p53 expression in seven cases of which the main tumor strongly expressed p53. Microscopic in situ carcinoma could be easily detected in p53 immunostaining. Multifocal involvement and submucosal invasion of carcinomas could be demarcated easily and definitely by strong p53 expression of carcinoma cells. All adenomas showed diffuse weak p53 expression. The difference of p53 expression (p< 0.001) could be used as a differential diagnosis between adenomas and carcinomas. According to these results, we propose that for careful histological examination in hospital diagnosis, both histological evaluation and p53 immunostaining are important diagnostic parameters in EMR samples of the intestinal type of gastric carcinomas.
AB - Endoscopic mucosal resection (EMR) has been standardized for the treatment of intestinal type of intramucosal gastric carcinomas, and careful histological examination of the resected specimen is important for further treatment. To evaluate the diagnostic utility of p53 expression in gastric EMR samples, using immunohistochemical staining, we examined 24 gastric carcinomas (22 intestinal types and two diffuse types) and 20 adenomas removed by EMR. Intestinal type of adenocarcinomas revealed strong p53 expression in 13 cases (59%), weak in four cases (18%), and negative in five cases (23%). Resection margins of 11 carcinomas were involved in the carcinoma cells, which showed the same p53 expression pattern with main carcinoma cells. Squeezed carcinoma cells, remaining in resection margins, were definitely identified by strong p53 expression in seven cases of which the main tumor strongly expressed p53. Microscopic in situ carcinoma could be easily detected in p53 immunostaining. Multifocal involvement and submucosal invasion of carcinomas could be demarcated easily and definitely by strong p53 expression of carcinoma cells. All adenomas showed diffuse weak p53 expression. The difference of p53 expression (p< 0.001) could be used as a differential diagnosis between adenomas and carcinomas. According to these results, we propose that for careful histological examination in hospital diagnosis, both histological evaluation and p53 immunostaining are important diagnostic parameters in EMR samples of the intestinal type of gastric carcinomas.
KW - Adenoma, gastric
KW - Early gastric carcinoma
KW - Immunohistochemistry
KW - Protein p53
KW - Surgical procedure, endoscopic, mucosal resection
UR - http://www.scopus.com/inward/record.url?scp=0033173373&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033173373&partnerID=8YFLogxK
M3 - Article
C2 - 10485621
AN - SCOPUS:0033173373
VL - 14
SP - 412
EP - 416
JO - Journal of Korean Medical Science
JF - Journal of Korean Medical Science
SN - 1011-8934
IS - 4
ER -