Something Seems Fishy: Hepatic Abscess Due to Foreign Body Ingestion in a Pediatric Patient

Pediatric hepatic abscesses are uncommon in children. They are usually preceded by intra-abdominal infections or caused by acute or chronic biliary disease. Cases of hepatic abscesses secondary to foreign body ingestion are even rarer but are most reported in countries such as China, where ingestion of fish and chicken bones is common. We report a rare case of an adolescent patient who developed a hepatic abscess after ingestion of a fishbone foreign body. He presented to the emergency department with emesis, abdominal pain, and subjective fevers of unknown etiology. Initial imaging of the abdomen was pertinent for a heterogeneous hepatic mass with evidence of fluid collection, concerning for malignancy. Subsequent incision and drainage then confirmed fluid collection to be pus. However, his cryptogenic hepatic abscess was not responsive to broad-spectrum intravenous antibiotics. After imaging was re-reviewed and repeated, a 4.3 cm thin curvilinear hyperdensity was identified embedded in the liver parenchyma. Eventually, the patient underwent exploratory laparoscopy where a fishbone foreign body was removed. To our knowledge, this is one of the few reported pediatric cases of hepatic abscess formation caused by a foreign body ingestion. Hepatic abscesses that do not resolve with antibiotics and ultrasound-guided drainage via catheter should prompt reassessment of other uncommon etiologies, specifically migrated foreign bodies as a rare but important differential diagnosis. Compared to pyogenic hepatic abscesses, hepatic abscesses secondary to foreign bodies require expedited surgical intervention for source control; thus, timely recognition and prompt intervention are crucial to minimize morbidity and mortality.