Pulmonary embolism, cardiac arrhythmia, anaphylaxis, portal hypertensive gastropathy, worsening esophageal varices, duodenal varices, worsening ascites, and bacterial peritonitis
[massgeneral.org]
Gastric variceal hemorrhage, severe portal hypertensive gastropathy, splenic vein thrombosis.
[ncbi.nlm.nih.gov]
There are studies which show that sclerotherapy can lead to worsening of portal hypertensive gastropathy.
[ghrnet.org]