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Accessory liver lobes: anatomical description and clinical implications.

M Glenisson¹, C Salloum¹, C Lim¹

¹Service de chirurgie digestive, hépatobiliaire, pancréatique et transplantation hépatique, hôpital Henri-Mondor, Assistance Publique-Hôpitaux de Paris, 51, avenue du Maréchal-de-Lattre-de-Tassigny, 94010 Créteil, France.

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|December 3, 2014

Summary

Accessory liver lobes are rare, often incidentally found growths. They can mimic tumors or, rarely, develop hepatocellular tumors, requiring careful diagnosis.

Keywords:

Accessory lobe Anatomical variation Laparoscopic hepatectomy Pedunculated hepatocellular tumors Riedel's lobe

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Area of Science:

Hepatology
Anatomical Variations

Background:

Accessory liver lobes are uncommon congenital anomalies resulting from excessive liver development.
These lobes are typically infrahepatic and can be mistaken for tumors.
Riedel's lobe, a hypertrophy of segments V and VI, is a well-known example.

Purpose of the Study:

To provide an updated review of accessory hepatic lobes.
To discuss their clinical presentation, diagnosis, and potential complications.

Main Methods:

Literature review focusing on accessory hepatic lobes.

Main Results:

Accessory lobes are often discovered incidentally.
Complications include torsion, particularly in pedunculated forms.
Hepatocellular tumors have been reported to develop within accessory lobes.

Conclusions:

Accessory hepatic lobes are rare but important considerations in liver imaging.
Differential diagnosis with tumors is crucial.
Awareness of potential complications like torsion and neoplasm is necessary.