Incidental abnormalities detected during scintigraphy for gastrointestinal bleeding.

A CASE OF SOFT TİSSUE HEMATOMA DETECTED INCIDENTALLY ON 99m TC-LABELLED RBC GASTROINTESTINAL BLEEDING SPECT/CT

“…In addition, inflammatory bowel disease, a diverticular abscess, and hypervascular neoplasms can cause misinterpretation on GI bleeding scintigraphy. [ 1 – 4 ] This case shows a rare incidental finding during gastrointestinal bleeding scintigraphy. SPECT/CT images contribute a precise localization of positive enteric or non-enteric findings to the scintigraphic study.…”

“…However, there have been numerous case reports of non-hemorrhagic abnormalities incidentally found during scintigraphic studies performed with technetium 99m-(Tc-99m) pertechnetate labeled red blood cells (RBCs). [ 1 , 2 ]…”

The SNMMI Procedure Standard/EANM Practice Guideline for Gastrointestinal Bleeding Scintigraphy 2.0

“…Vascular grafts can also alter the normal blood pool anatomy. There are several reports of arterial leaks mimicking gastrointestinal bleeding (82)(83)(84)(85)(86)(87). In addition, the literature reports a number of case reports demonstrating aortoduodenal fistula rupture (88), hemangiomas in the liver or small bowel (89,90), and abdominal varices (92,94).…”

“…A catheter site can cause static activity in the abdominal wall (107). A blush of activity in the bowel may occur because of hyperemia after surgical resection or in Crohn disease (83). Nonenteric bleeding activity can move and accumulate and confuse interpretation, including intraperitoneal hemorrhage (108,109), mesenteric bleeding (110), and soft-tissue hematoma/hemorrhage (111)(112)(113)(114)(115)(116).…”

The Role of Nuclear Medicine in the Detection of Acute Gastrointestinal Bleeding

“…64 Bleeding into a pancreatic pseudocyst also has been reported. 65 Other structures that have been reported to have the potential to reduce the specificity of 99m Tc-labeled erythrocytes include a horse-shoe kidney, 66 the left ovarian vein, 67 dilated abdominal aorta, 68 ischemic bowel, 69 hepatic hemangioma, 70 diverticula abscess, and uterine leiomyoma 71 (Fig. 3).…”