The Relationship of Left Lobe Volume with Huang Biliary Tract Variations in Living Liver Donor Candidates Planned for Right Hepatectomy

Abstract

Objective: To investigate the effect of bile duct variations on liver remnant volume in living donors, according to the Huang classification. Material and Methods: Triphasic abdominal Computed Tomography (CT) and magnetic resonance cholangiopancreatography (MRCP) images of one hundred sixty-nine live donors were analyzed retrospectively. Biliary tracts were divided into four categories according to the Huang classification. Liver total and lobar volumes were calculated from CT images with a special computer program (Myrian Pro; Intrasense, Montpellier, France). The volume was proportional to the left lobe volume percentage. The categorical data of the Huang classification and the percentage of left lobe volume were compared using the Kruskal-Wallis test. Values with P <0.05 were considered statistically significant. Results: According to Huang classification, there was no statistical difference in age and gender distribution between categories (P = 0.756 and P = 0.124, respectively). There was no significant relation between the groups in Huang classification and remnant left lobe volumes calculated through the liver transplantation resection line (Cantlie line) (P = 0.354). Conclusion: It was concluded that variations in biliary tract did not affect the remnant left lobe volume in living liver donor candidates planned for right hepatectomy.

Keywords

• Biliary tract variations
• Computed tomography
• Magnetic resonance cholangiopancreatography
• Remnant volume

Sağ Hepatektomi Planlanan Canlı Karaciğer Donör Adaylarında Sol Lob Volümünün Huang Safra Yolu Varyasyonları ile İlişkisi

Öz

Amaç: Huang sınıflandırmasına göre, safra kanalı varyasyonlarının canlı donörlerde karaciğer kalıntı hacmi üzerine etkisini araştırmak. Gereç ve Yöntemler: Yüz altmış dokuz canlı donöre ait, trifazik batın Bilgisayarlı Tomografi (BT) ve manyetik rezonans kolanjiopankreatografi (MRKP) görüntüleri retrospektif olarak incelendi. MRKP ile safra yolları huang sınıflamasına göre dört kategoriye ayrıldı. BT görüntülerinden özel bir bilgisayar programıyla (Myrian Pro; Intrasense, Montpellier, France) karaciğer total ve lobar volümleri hesaplandı. Sol lob volümü total volume oranlanarak sol lob volüm yüzdesi bulundu. Huang sınıflaması kategorisel verileri ile sol lob volüm yüzdesi verileri Kruskal-Wallis testi aracılığıyla karşılaştırıldı. İstatistiksel olarak P<0.05 olan değerler anlamlı kabul edildi. Bulgular: Huang sınıflamasına göre kategoriler arasında yaş ve cinsiyet dağılımında istatistiksel fark izlenmedi (sırasıyla; p= 0,756 ve p= 0,124). Karaciğer transplantasyon rezeksiyon hattına (Cantlie hattı) göre hesaplanan remnant sol lob volümleri ile Huang sınıflamasındaki gruplar arasında anlamlı ilişki saptanmadı (p= 0,354). Sonuç: Sağ hepatoktomi planlanan canlı karaciğer vericilerinde safra yollarındaki varyasyonların remnant sol lob volümünü etkilemediği sonucuna varıldı.

Anahtar Kelimeler

• Bilgisayarlı tomografi
• Karaciğer kalıntı hacmi
• Manyetik rezonans kolanjiopankreatografi
• Safra yolu varyasyonları

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