抄録
Hepatobiliary scintigraphy with 99mTc-PI was performed on 16 patients after various types of hepatectomy for either primary or secondary liver tumor. 99mTc-PI scintigraphy was found very useful, especially in regard to clinical evaluation of indistinct low-uptake areas observed on a 99mTc colloid liver scintigram in the regenerating liver after hepatectomy. Both tests were conducted successively within a couple of weeks. Colloid scintigrams after hepatectomy were divided into two groups according to the sites of indistinct low-uptake areas; one showed them near the resected margin of the regenerating liver (Type I), and the other showed them in both marginal and intrahepatic regions (Type II). Of these 16 patients, 8 showed Type I and 7 showed Type II. The remaining one was excluded for postsurgical complications. By comparing the colloid scintigram with the 99mTc-PI scintigram, in all the cases of Type I indistinct low-uptake areas were found to be the hilum with a shifted common bile duct. On the other hand, in 2 cases of Type II indistinct low-uptake areas were caused by the hilum accompanied by the dilated bile ducts. In the remaining 5, indistinct low-uptake areas were not identified as bile ducts but were confirmed to be a recurrence of the tumor.
