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MR findings in human fascioliasis
1Department of Radiology, Seoul National University College of Medicine, Korea.
Tropical Medicine & International Health : TM & IH
|June 1, 1996
Summary
Magnetic resonance (MR) imaging reveals three distinct lesion types in hepatic fascioliasis, a parasitic liver infection. These diverse MR signal intensities can help diagnose this condition, previously not well-documented with MR.
Area of Science:
- Medical Imaging
- Parasitology
- Hepatology
Background:
- Human fascioliasis results from ingesting Fasciola hepatica parasites.
- Computed tomography and cholangiography have documented hepatic fascioliasis, but MR imaging findings were unreported.
Observation:
- Hepatic fascioliasis lesions appear in tract-like patterns on MR images.
- Three distinct lesion types with varying signal intensities in T1WI and T2WI were observed.
- Enhancement patterns after intravenous contrast administration were also noted.
Findings:
- Type 1: Iso-signal T1WI, higher T2WI signal, diffuse enhancement.
- Type 2: Low signal T1WI, low signal T2WI, no enhancement.
- Type 3: Low signal T1WI, high signal T2WI, no enhancement, mimicking fluid collections.
Implications:
- The diverse MR signal intensities suggest traumatic hepatitis from worm migration.
- MR imaging can provide suggestive findings for diagnosing hepatic fascioliasis.
- This study establishes baseline MR imaging characteristics for hepatic fascioliasis.