[Obstruction of the hepatic portion of the inferior vena cava: morphological characteristics and surgical treatment (author's transl)].

Operable obstructions of the hepatic portion of the inferior vena cava (IVC) are rare but probably diagnosed more frequently nowadays. Since 1969 we operated 2 patients, one of them twice. Concerning to these cases the problems of diagnosis, morphology and surgical treatment are discussed. In the patient, who were operated twice, we found the combination - which has not been reported in medical literature yet - of a membranous stenosis of the hepatic portion of the IVC and a large Eustachian valve obstructing the IVC.