Related Experiment Video
Updated: Jan 5, 2026
Laparoscopic S7 Hepatectomy with Positive Fluorescence Staining
Published on: May 9, 2025
Hepatic Inflammatory Pseudotumor Protruding from the Liver Surface and Directly Penetrating the Colon
Naoki Imazu1, Michihiko Shibata1, Yudai Koya1
1Third Department of Internal Medicine, University of Occupational and Environmental Health, School of Medicine, Japan.
Abstract:
A 69-year-old man was diagnosed with a liver abscess and received antibiotics at a local hospital. He was referred to our hospital due to a persistent fever. He had hepatic masses protruding from the liver surface toward the transverse colon. We reached a diagnosis of inflammatory pseudotumor (IPT) by a percutaneous liver biopsy. Colonoscopy showed direct invasion of IPT to the colon. His condition improved by the intravenous administration of antibiotics. Hepatic IPT is often misdiagnosed as a malignant tumor. We should consider IPT when we encounter hepatic tumors, and a percutaneous liver biopsy is useful for avoiding unnecessary excessive treatments.
Insights
A liver abscess patient with persistent fever was diagnosed with inflammatory pseudotumor (IPT). Percutaneous liver biopsy confirmed IPT, aiding in avoiding misdiagnosis and unnecessary treatments.
Area of Science:
- Hepatology
- Gastroenterology
- Oncology
Background:
- A 69-year-old male presented with persistent fever, initially diagnosed with a liver abscess and treated with antibiotics.
- The patient exhibited hepatic masses protruding towards the transverse colon, raising diagnostic concerns.
Observation:
- A percutaneous liver biopsy was performed to investigate the hepatic masses.
- Colonoscopy revealed direct invasion of the transverse colon by the hepatic lesion.
Findings:
- The diagnosis of inflammatory pseudotumor (IPT) of the liver was confirmed via percutaneous biopsy.
- Intravenous antibiotic administration led to clinical improvement, suggesting an inflammatory rather than malignant process.
Implications:
- Hepatic inflammatory pseudotumor (IPT) is frequently misdiagnosed as a malignant liver tumor.
- Considering IPT in the differential diagnosis of hepatic masses is crucial.
- Percutaneous liver biopsy is an essential tool to avoid misdiagnosis and prevent unnecessary aggressive treatments for hepatic IPT.
Related Concept Videos
01:27Inflammatory Bowel Disease I: Ulcerative Colitis
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
01:17Chronic Bowel Disorders: Introduction
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...