Characteristics of gastric carcinoma invading the muscularis propria.
BACKGROUND
Although gastric carcinomas invading the muscularis propria (mp) are classified among advanced-stage cancers in Japan, postoperative survival has been reported to approximate that in early gastric carcinoma. Characteristics of gastric carcinomas invading the mp, therefore, were compared to carcinomas invading only the mucosa (m) or submucosa (sm), and to those invading the subserosa (ss) or serosa (se).


METHODS
We retrospectively compared clinicopathologic findings, prognosis, and cause of death in patients with gastric carcinoma invading mp to those showing the other levels of invasion.


RESULTS
Patients with carcinomas invading the mp had larger tumors and more frequent lymph node and hematogenous metastases than those with carcinomas invading only m or sm. Yet they had smaller tumors and less frequent lymph node or peritoneal metastasis than those with carcinomas invading ss or se. Postoperative survival with tumors invading the mp was intermediate between that with carcinoma invading only m or sm and that with subserosal or serosal invasion. Causes of death with tumors invading muscularis were similar to those with carcinomas invading only m or sm.


CONCLUSIONS
Characteristics of gastric carcinoma invading the mp are intermediate between those of early and advanced carcinoma.
Otsuji
Eigo
E
Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan. otsuji@koto.kpu-m.ac.jp
Kuriu
Yoshiaki
Y
Ichikawa
Daisuke
D
Okamoto
Kazuma
K
Hagiwara
Akeo
A
Yamagishi
Hisakazu
H
D000368:Aged; D002277:Carcinoma / Q000401:mortality / Q000473:pathology* / Q000556:secondary / Q000601:surgery; D005260:Female; D005743:Gastrectomy / Q000401:mortality; D006801:Humans; D008197:Lymph Node Excision; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009092:Mucous Membrane / Q000473:pathology*; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D010534:Peritoneal Neoplasms / Q000556:secondary; D011379:Prognosis; D012704:Serous Membrane / Q000473:pathology; D013274:Stomach Neoplasms / Q000401:mortality / Q000473:pathology* / Q000601:surgery; D015996:Survival Rate