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Biomedical subjects

K Morinaga

Publications and source records attributed to K Morinaga.

At least 73 records · Page 4Linked to original sources

Multiple primary cancers following exposure to benzidine and beta-naphthylamine.

The incidence of second primary cancers has been ascertained in 3,322 employees who had worked from 1950 to 1978 in industries in Japan that manufactured benzidine and beta-naphthylamine. Of the 244 workers who had suffered from and died of cancer of the genitourinary organs (first primary cancer), 11 (all male) had subsequent primary, histologically confirmed cancers of the liver, gallbladder, bile duct, large intestine, and lung. A control group of 177 male bladder cancer patients, assembled from the Osaka Cancer Registry during 1965-1975, showed eight cases of a second primary, five being stomach cancer. No stomach cancer was observed in the study cohort. A statistically significant excess risk for liver, gall bladder, and bile duct cancer (p less than 0.05) was found The number of observed deaths from respiratory cancer was greater than expected, though not statistically significant. These findings appear to confirm previous clinical data suggesting an increased occurrence of multiple primary cancers in workers exposed to benzidine/beta-naphthylamine, pointing to a pluripotential action of these carcinogens.

2-Naphthylamine↗

Clinical experiences with left gastric vena caval shunt in patients with esophageal varices.

Left gastric vena caval shunt (Inokuchi) was performed in four patients with liver cirrhosis; electively in two and prophylactically in two cases. The overall results have been satisfactory in terms of the effect on esophageal varices and postoperative complications. This procedure appeared to be superior to distal splenorenal shunt or other direct surgical procedures in several aspects. Since left gastric vena caval shunt does not require particularly elaborate surgical techniques and can be performed safely even in patients with considerably impaired hepatic function, it can be recommended as an ideal surgical procedure to be performed in elective and prophylactic surgical candidates.

Adult↗