Accessory liver lobes: Anatomical description and clinical implications

Glenisson, Mathilde; Salloum, C.; Lim, Chetana; Lacaze, L.; Malek, Alexandre; Enriquez, A.; Compagnon, P.; Laurent, Alexis; Azoulay, Daniel

doi:10.1016/j.jviscsurg.2014.09.013

Cited by 57 publications

(72 citation statements)

References 32 publications

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“…The accessory lobes are variable in location but are usually located at the right lobe of the liver and attached by a bridge of hepatic tissue, mesentery or a stalk. However, they inherently differ from other ectopic liver tissues by the lack of the continuity with the liver [4]. …”

Section: Discussionmentioning

confidence: 99%

Right Iliac fossa pain due to torsion and ischaemia of accessory liver lobe

Al-Anwar

Askari

Alvi

2019

Journal of Surgical Case Reports

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An accessory liver lobe (ALL) is the presence of ectopic hepatic tissue which has developed as a result of excessive hepatic development. The majority of patients with ALL remain asymptomatic and their findings are incidental, either after undergoing radiological imaging or during surgery for other pathology. However, in a small number of patients who have a pedunculated ALL, torsion of the lobe on its axis can cause pain, often due to ischaemia of the lobe. We report a 26-year-old female who presented with right iliac fossa pain mimicking acute appendicitis and preceded by recent vigorous exercising activity.

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Section: Discussionmentioning

confidence: 99%

Right Iliac fossa pain due to torsion and ischaemia of accessory liver lobe

Al-Anwar

Askari

Alvi

2019

Journal of Surgical Case Reports

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“…The presence of an accessory liver lobe is often revealed by torsion, especially when the lobe is pedunculated. 1 Accessory liver lobes are composed of normal liver parenchyma in continuity with the liver, in contrast to ectopic liver lobes that have no anatomic continuity with the normal liver. Their form, size, and localization are variable.…”

Section: Discussionmentioning

confidence: 99%

“…They are most often located in the right liver, attached by a pedicle containing vessels and biliary ducts. 1 The prevalence of accessory liver lobe is less than 1%, but probably underestimated because they are often asymptomatic. 1 Well described in animals, torsion of accessory liver lobe is rare in humans, especially in children.…”

Section: Discussionmentioning

confidence: 99%

An Unusual Cause of Abdominal Pain

Chaussy¹,

Manzoni²,

Ridley

et al. 2018

The Journal of Pediatrics

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“…[134] In the abdomen, patients rarely manifest physical complaints, unless complications occur, such as torsion, bleeding, or obstruction. [256]…”

Section: Introductionmentioning

confidence: 99%

An unexpected diagnosis of ectopic liver diagnosed by fine needle aspiration

2016

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The differential diagnosis of perigastric masses is broad, ranging from benign to malignant entities. Among the benign entities, accessory liver lobes and ectopic liver are unusual and often incidentally discovered. Here, we report a patient with malignant melanoma who was clinically suspected to have a perigastric metastasis or a gastrointestinal stromal tumor but was ultimately diagnosed by fine needle aspiration (FNA) to have benign ectopic liver. A 47-year-old male was diagnosed with malignant melanoma of the scalp in May 2015 at a tertiary care hospital. He was found to have a 2.6 cm enhancing mass adjacent to the fundus of the stomach and below the diaphragm by computed tomography imaging. To exclude metastasis, the patient was referred to endoscopy, and an endoscopic ultrasound-guided FNA was performed with rapid on-site evaluation (ROSE) by a cytopathologist. A relatively new FNA needle (Shark Core) was used, which produced useful core biopsy material. Cytopathology demonstrated flat sheets, single cells, and small clusters of polygonal cells. There was abundant granular cytoplasm, often containing pigment. Cells lacked pleomorphism. The smear findings appeared consistent with hepatocytes. The cell block demonstrated small core fragments of hepatic parenchyma with portal tracts. Immunohistochemistry for arginase-1 confirmed that this was hepatic tissue. ROSE was useful for communicating with the endoscopist that the mass was both far from, and not connected to, the liver. This is the first documented account of perigastric ectopic liver diagnosed by FNA. This entity should be considered in the differential of perigastric masses.

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Accessory liver lobes: Anatomical description and clinical implications

Cited by 57 publications

References 32 publications

Right Iliac fossa pain due to torsion and ischaemia of accessory liver lobe

Right Iliac fossa pain due to torsion and ischaemia of accessory liver lobe

An Unusual Cause of Abdominal Pain

An unexpected diagnosis of ectopic liver diagnosed by fine needle aspiration

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