Characterization of multiple acquired portosystemic shunts using transplenic portal scintigraphy.

We describe the scintigraphic patterns observed in 14 patients with confirmed multiple portosystemic shunts imaged via transplenic portal scintigraphy. Parameters evaluated included presence of multiple anomalous vessels, presence of hepatofugal flow caudal to spleen, and/or to cranial margin of the kidneys, slow absorption resulting in longer spleen to heart transit time, and presence of biphasic or fragmented bolus. Twenty-eight additional patients, 14 with a confirmed single portocaval and 14 with a portoazygos shunt, were used for comparison.

Comparison of 99mTcO4(-) trans-splenic portal scintigraphy with per-rectal portal scintigraphy for diagnosis of portosystemic shunts in dogs.

Objective: To evaluate trans-splenic portal scintigraphy (TSPS) and per-rectal portal scintigraphy (PRPS) for diagnosis of congenital portosystemic shunts (CPSS) in dogs, and compare these results with surgical findings.

Study Design: Prospective, randomized cross over clinical trial.

Animals: Dogs (n=42) with suspected CPSS.