Right and left liver lobe biopsies by minilaparoscopy reveal clinically significant sampling error in staging and grading of autoimmune hepatitis

An invasive minilaparoscopic biopsy of both liver lobes in AIH (AIH, AIH-PBC, and AIH-PSC) was more accurate for grading/staging disease activity than percutaneous biopsy, reflecting intrahepatic heterogeneity. Noninvasive LiverMultiScan cT1 demonstrated this heterogeneity, and its extent independently predicted disease flares, supporting multi-lobe sampling and cT1 for comprehensive assessment.