Imaging features of hepatic angiomyolipomas

Area of Science:

• Radiology
• Oncology

Background:

• Hepatic angiomyolipomas (HAL) are rare benign liver tumors.
• Distinguishing HAL from other liver lesions can be challenging based on imaging alone.

Observation:

• Sporadic HAL exhibit variable imaging features due to inconsistent fat content, complicating diagnosis.
• HAL in patients with tuberous sclerosis (TSC) show a more uniform appearance.
• Associated TSC stigmata can aid in diagnosis.

Findings:

• Imaging characteristics of sporadic HAL are diverse, often requiring biopsy for definitive diagnosis.
• Consistent imaging findings in TSC-associated HAL, alongside clinical features, facilitate diagnosis.
• Accurate preoperative diagnosis of HAL is crucial.

Implications:

• Improved diagnostic accuracy for HAL in TSC patients can prevent unnecessary surgical interventions.
• Radiologists should consider TSC in the differential diagnosis of HAL.
• Standardized imaging criteria may improve HAL detection and characterization.