Blood flow of experimental liver metastases in rat as evaluated by the locally injected 133-Xenon washout.
The investigations on blood flow in liver metastases are interesting from both a pathophysiological and a therapeutic point of view. Available data, however, are few and not definitive, as these studies are complex and difficult to perform. In a group of 25 Sprague-Dawley rats, in which liver metastases of Walker-256 carcinoma had been implanted, the blood flows in a metastasis and in the normal liver surrounding it were determined by means of the locally injected 133-Xenon washout. Thirteen sham-operated rats were a control group. Blood flow in the metastases was decreased as a group compared to that in the normal liver surrounding metastases and to that in liver of sham-operated rats. Small metastases showed normal or increased blood flow, large ones decreased or stagnant blood flow. Moreover, a significant inverse correlation was found between blood flow and diameter of metastasis. It is concluded that liver metastases of Walker-256 carcinoma show a decrease in blood flow which is related to the size of metastasis.
D000818:Animals; D002279:Carcinoma 256, Walker / Q000473:pathology; D005260:Female; D008113:Liver Neoplasms / Q000098:blood supply* / Q000556:secondary; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D014978:Xenon
D014978:Xenon