1Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan
2Department of Clinical Laboratory, National Cancer Center Hospital, Tokyo, Japan
3Department of Surgery, National Cancer Center Hospital, Tokyo, Japan
Reprint requests and correspondence: Hiroyoshi Furukawa, MD, Department of Diagnostic Radiology, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo 104, Japan
Received June. 7, 2000; accepted June. 19, 2000