Joseph U A, Jhingran S G
Baylor College of Medicine, Houston, Texas.
Clin Nucl Med. 1987 Nov;12(11):845-7. doi: 10.1097/00003072-198711000-00003.
Imaging with Tc-99m labeled red blood cells (RBC) is increasingly being used in the detection of acute gastro-intestinal bleeding, especially in patients with intermittent bleeding. A patient is presented in whom the labeled RBC scan was helpful in the incidental discovery of a previously unsuspected probable angiosarcoma of the right femur and adjacent soft tissues of the right hip due to the "blood pool" or "blush effect" of the labeled cells. The labeled RBC scan also identified extravasation due to active gastrointestinal bleeding from a previously unknown angiosarcoma of the ascending colon. Thus, the Tc-99m labeled RBC scan was useful in simultaneously detecting extravasation and blood pool effect at two remote tumor sites in the same patient.
用锝-99m标记红细胞（RBC）进行成像越来越多地用于检测急性胃肠道出血，特别是间歇性出血的患者。本文介绍了一名患者，其标记红细胞扫描因标记细胞的“血池”或“充盈效应”，有助于偶然发现先前未被怀疑的右股骨及右髋部相邻软组织可能存在的血管肉瘤。标记红细胞扫描还发现了升结肠一处先前未知的血管肉瘤导致的活动性胃肠道出血引起的外渗。因此，锝-99m标记红细胞扫描有助于同时检测同一患者两个远处肿瘤部位的外渗和血池效应。
