An unusual cause of pericardial effusion: A case report of a hepatic abscess following foreign body migration and duodenal perforation

•Foreign bodies may cause duodenal perforation and hepatic abscess formation.•Ingested pens may be the cause, but most commonly from bone fragments.•Presenting signs and symptoms may be non-specific (fever, pericardial effusion).•Computed tomography imaging is the workhorse in making this difficult diagnosis.•Most common definitive management is via laparotomy or percutaneous drainage.