Accessory liver within the thoracic cavity

Area of Science:

• Thoracic Surgery
• Diagnostic Imaging
• Hepatology

Background:

• Ectopic intrathoracic liver tissue is an extremely rare condition, predominantly documented in case reports.
• Diagnosis is often incidental, occurring post-thoracic surgery or autopsy.
• Current diagnostic pathways may lead to unnecessary invasive procedures.

Observation:

• A literature review identified Type II as the most common subtype of ectopic liver, followed by Types I and III.
• Ultrasound, particularly with Color Doppler Imaging, offers a safe, low-cost, and precise diagnostic method for Types I and II.
• Non-operative management, guided by long-term follow-up, is presented as a viable alternative to surgical intervention.

Findings:

• A novel classification system for thoracic ectopic liver is proposed.
• Ultrasound with Color Doppler Imaging demonstrates high diagnostic accuracy for specific ectopic liver subtypes.
• Non-operative management can effectively guide clinical care and prevent unnecessary surgeries.

Implications:

• The proposed classification aids in understanding pathophysiology and optimizing diagnostic and management strategies.
• Safe and accessible imaging modalities like ultrasound can reduce radiation exposure, especially in pediatric cases.
• This approach supports conservative management, potentially avoiding invasive procedures and improving patient outcomes.