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Biomedical subjects

R Pereiras

Publications and source records attributed to R Pereiras.

26 records · Page 2Linked to original sources
PubMed1976

The fate of esophageal varices following selective distal splenorenal shunt.

Esophagographic evaluation of the fate of esophageal varices after distal splenorenal shunt was obtained. The radiologist-observer was blinded as to the surgical status of the films under study. The results indicate that varices are likely to persist after surgery. However, the sizes of the varices are clearly diminished following selective distal splenorenal shunt. The incidence of postoperative bleeding has been low, 3.7% (2/54) or one episode for each 441 months of postoperative survival.

Esophageal and Gastric Varices↗
PubMed1976

Percutaneous transhepatic cholangiography utilizing the Chiba University needle.

Percutaneous transhepatic cholangiography with the Chiba University needle has been performed in 42 patients with cholestasis. The examination was successful in 100% of patients with dilated intrahepatic bile ducts and in 89% of those with normal-size ducts. Complications were minimal. The results of this study suggest that PTC with the Chiba needle is superior to the current conventional methods. The patients with intrahepatic cholestasis, which often simulates extrahepatic biliary obstruction, were spared an unnecessary laparotomy.

Cholangiography↗
PubMed1976

Percutaneous cholangiography with the Chiba University needle: a new, safe, and accurate method in the diagnosis of cholestatic syndromes.

A modified technique of percutaneous transhepatic cholangiography utilizing the Chiba University needle is described. This new technique employs injection of dye through a thin flexible 22 gauge needle with a short bevel while it is slowly withdrawn under a fluoroscopic monitoring. The results of several investigators are reviewed and indicate that failure to visualize the biliary radicals with the Chiba University needle virtually rules out extrahepatic obstruction. It is anticipated that this technique will replace the traditional sheathed needle cholangiography as a diagnostic modality in the evaluation of the jaundiced patient.

Cholangiography↗
PubMed1975

Selective catheterization of the portal vein and its tributaries. Preliminary report.

The portal vein and its tributaries were selectively catheterized in 90 patients. Only one complication required surgery. This technique not only provides information about the status of the portal circulation and liver parenchyma but can also be used in the treatment of bleeding esophageal varices by selective embolization of autologous clots or inert material.

Catheterization↗
PubMed1975

67Gallium accumulation in hepatic actinomycosis.

A case of actinomycosis involving the liver is reported. The liver scan with 99mTcS colloid showed multiple areas of focal abnormalities. 67Gallium citrate liver scan showed these areas to concentrate intensely. This pattern of differential hepatic scintigraphy is seen in pyogenic abscesses as well as malignancy of the liver. Actinomycosis may mimic the clinical picture of a malignant neoplastic process, making the differential diagnosis of 67Ga-positive lesions of the liver more difficult.

Actinomycosis↗