Czerniak A, Zwas S T, Rabau M Y, Avigad I, Borag B, Wolfstein I
Clin Nucl Med. 1985 Aug;10(8):543-5. doi: 10.1097/00003072-198508000-00002.
Massive lower gastrointestinal (GI) bleeding caused by gallbladder carcinoma eroding into the colonic wall was demonstrated accurately by Tc-99m RBCs. In addition, retrograde bleeding into the gallbladder was also identified while arteriography did not show contrast extravasation. This case supports the use of Tc-99m RBCs over Tc-99m sulfur colloid for more accurate localization of lower GI bleeding.
99m锝标记红细胞(Tc-99m RBCs)准确显示了胆囊癌侵犯结肠壁导致的大量下消化道(GI)出血。此外,还发现有逆行性出血进入胆囊,而动脉造影未显示造影剂外渗。该病例支持使用99m锝标记红细胞而非99m锝硫胶体来更准确地定位下消化道出血。