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Biomedical subjects

K Okajima

Publications and source records attributed to K Okajima.

At least 289 records · Page 16Linked to original sources
PubMed1978

Management of congenital choledochal cyst with intrahepatic involvement.

The clinical features and surgical treatment of 75 patients with choledochal cysts with intrahepatic involvement (Type IV-A) were evaluated. Seventeen were in this series and 58 were reviewed from the literature. It was of interest that the incidence of Type IV-A choledochal cysts was nearly 30%, considerably higher than had been previously assumed. This type is commonly found in older children and young adults. Abdominal pain and fever indicative of biliary tract infection are more frequent seen than in patients with Type I, and a mass is not commonly palpable. Surgical treatment of Type IV-A must achieve bile drainage from the intrahepatic cysts as well as from the choledochal cyst. For this reason, as well as the prevention of later development of cancer in the wall of the cyst, hepaticoenterostomy at the porta hepatis with partial resection of the wall of the intrahepatic cyst (or partial hepatectomy if possible) combined with excision of the intrahepatic cyst is recommended as the procedure of choice for type IV-A cysts.

Adenocarcinoma↗
PubMed1978

A case of giant cavernous hemangioma of the liver complicated by intravascular coagulopathy.

A case of liver hemangioma complicated by intravascular coagulopathy is presented because of the rarity of the association. Hemangioma of the liver was suspected by palpation of the liver tumor, scintigraphy and x-ray examination, and confirmed by selective hepatic arteriography in combination with exploratory laparotomy. Intravascular coagulopathy was established by demonstrating secondary fibrinolysis and consumption of platelets and coagulation factors. Unconjugated hyperbilirubinemia due to micro-angiopathic hemolytic anemia was also present. The clinical course of the clotting abnormalities was basically a chronic one with an occasional acute or subacute defibrination process associated with further enlargement of the hepatic tumor. These provide sufficient evidence that the intravascular coagulopathy was closely related with the hemangioma in the liver. Neither ligation of a presumed nutritional artery of the hemangioma nor radiation therapy caused any demonstrable reduction in the tumor size.

Adult↗
PubMed1977

Changes in structural organization of surface membrane during erythrocyte maturation.

The effect of concanavalin A and its succinylated derivative on cell agglutination and potassium compartmentation of mature and immature erythrocytes was observed. The binding of tetravalent concanavalin A to the surface glycoproteins of rabbit erythrocytes leads to a change in the properties of the surface membrane, which results in an induction of cell agglutination and concomitant release of potassium from the cells. Both of the phenomena induced by concanavalin A are temperature dependent, and observed at above 15 degrees C. Divalent succinylated concanavalin A, lacking the inducing activity of surface glycoprotein cross-linking into patches and caps, caused neither cell agglutination nor change in the potassium compartmentation of erythrocytes and reticulocytes. In the case of immature reticulocytes, however, remarkable agglutination of the cells was induced without a change in the potassium compartmentation after treatment with tetravalent concanavalin A. It is suggested that changes in the molecular organization of the surface membrane occur in which potassium compartmentation of the reticulocytes becomes more susceptible to surface glycoprotein cross-linking during cellular maturation.

Animals↗
PubMed1977

Congenital bile duct cysts: Classification, operative procedures, and review of thirty-seven cases including cancer arising from choledochal cyst.

Congenital bile duct cysts are observed in any part of the bile duct from the liver to the duodenum. Reports of cases of cancer arising from it are increasing. Excision of the choledochal cyst seems to be the treatment of choice and partial resection of the intrahepatic cyst followed by intrahepatic cystoenterostomy at the porta hepatis is necessary for type IV-A cysts.

Adolescent↗
PubMed1977

Surgical treatment of gastric cancer with special reference to lymph node removal.

Factors influencing the prognosis in gastric cancer treated by curative resection include lymph node metastasis and the extent of invasion of the gastric wall. Lymph node metastasis can be removed surgically, but the extent of invasion is not amenable to external measures. Of these two factors, the extent of wall invasion has the greatest influence on prognosis in cases undergoing curative resection. With lymph node removal of equal extent the prognosis worsens in proportion to the depth of invasion. Further, lymph node metastasis increases with increasing depth of invasion. Metastasis was seen in Group 2 and 3 nodes in more than 60% of cancer with invasion beyond the Tunica muscularis propria (pm), indicating that wide lymph node removal is essential in cancers with deep invasion of the wall. The effects of extended radical operation on the host as illustrated by the indices of total serum protein and albumin levels were no different from those of less extensive resections. It was confirmed that extensive radical resection did not delay postoperative recovery.

Humans↗