Journals / Medical Network Klinik Bilimler ve Doktor / 2005 / Cilt: 11 - Sayı: 1

Atrophy and hypertrophy in the liver

Karaciğerde atrofi ve hipertrofi

Pages
45–50
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

By this way liver hypertrophy results in increased hepatic functional reserve.

📌 3 Key Takeaways

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Objective & Hypothesis:Compansatory hypertrophy after liver injury is a common event in many species that modern surgical techniques depend.
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Key Findings & Data:Atrophy may be described as at least 50% reduction in liver segment or lobe volume.
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Conclusion & Impact:By this way liver hypertrophy results in increased hepatic functional reserve.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Karaciğer · Atrofi · Hipertrofi

Abstract

Compansatory hypertrophy after liver injury is a common event in many species that modern surgical techniques depend. Although both atrophy and hypertrophy is used to define a static position, important aspect are static and dynamic factors describing the etiology and following event. Atrophy may be described as at least 50% reduction in liver segment or lobe volume. Practically the most common etiologic factors for atrophy-hypertrophy complex are bile duct obstruction or portal vein occlusion. Though the mechanism of portal venous obstruction may be suggested the role of bile duct obtruction is still unclear. Clinical appearance of atrophy may be different due to the underlying causes. Jaundice may be observed bile duct obstruction related atrophy. Atrophy-hypertrophy complex may be clinical and radiologic dilemma. Mass suspicous may occur as a result of atrophy in one lobe and compansatory hypertrophy in the other lobe. Liver fonctional reserve is a major concern in patients having atrophy-hypertrophy complex. An other important aspect is portal anatomic changing due to atrophy-hypertrophy complex. Agressive radical hepatectomy may be carried out as a result of advances in hepatobiliary surgery. Preoperative portal vein embolization is used to facilitate hypertrophy in the lobe that will be left, and atrophy in the liver resected. By this way liver hypertrophy results in increased hepatic functional reserve.

Özet

Karaciğer dokusunun hasardan sonra kompansatuar büyümesi birçok türde görülen modern cerrahi tekniklerin dayandığı bir noktadır. Bu büyümeyi uyaran mekanizmalar henüz tam olarak çözülememiştir. Her ne kadar atrofi ve hipertrofi statik bir durumu tanımlamak için kullanılsa da asıl önemli olan bu durumun altında yatan sebepler ve takip eden statik ve dinamik değişikliklerdir. Atrofi, tanımlanan karaciğer segment ya da lobunun hacminde en azından %50 azalma olarak tanımlanır. Atrofi-hipertrofi kompleksinin pratikte en sık karşılaşılan sebepleri safra yolu obstrüksiyonu ya da portal venöz oklüzyondur. Portal venöz oklüzyonun atrofi-hipertrofi kompleksinin patogenezine etkisi tahmin edilebilir olmasına karşın safra yolu obstrüksiyonunun etkisi henüz açıklanamamıştır. Atrofinin klinik görünüşü altta yatan sebebe bağlı olarak değişiklik gösterir. Safra yolu obstrüksiyonuna bağlı atrofide sarılık görülebilir. Atrofi-hipertrofi kompleksi klinik ve radyolojik olarak tanı problemlerine yol açabilir. Bir lobta atrofi, diğer lobtaki kompansatuar hipertrofi kitle izlenimi verebilir. Atrofi-hipertrofi kompleksi olan hastalarda cerrahi problemlerden birisi karaciğerin fonksiyonel rezervidir. Bir diğer önemli konuda atrofi-hipertrofi kompleksine bağlı olarak porta hepatiste gelişen anatomik değişikliklerdir. Hepatobilier cerrahideki gelişmelerle birlikte agresif radikal hepatektomi yapılabilmektedir. Bu nedenle preoperatif portal ven embolizasyonu ameliyat sonrası kalacak olan karaciğerde hipertrofi, çıkacak olan kısımda ise atrofi meydana getirmek için kullanılmaktadır. Böylece karaciğer hipertrofisi kalan hepatik rezervin artmasıyla sonuçlanır.

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Cite This Article

ÖZKAN, N., ÇAPAR, M., KARAYALÇIN, K. (2005). Atrophy and hypertrophy in the liver. Medical Network Klinik Bilimler ve Doktor, Cilt: 11 - Sayı: 1, 45–50. https://ajindex.com/articles/278407

References (15)

  1. Zimmerman A. Compensatory hyperplasia of liver. Surgery of The Liver and Biliary Tract 1994; 1:65-81
  2. Hadjis NS, Shweizer W, Blumgart LH. Liver hyperplasia, hypertrophy and atrophy; clinical relevance. Surgery of The Liver And Biliary Tract 1994; 1:83-94
  3. Ham M. Lobar and segmental atrophy of the liver. World J. Surg 1990; 14:457-562
  4. Czerniak A, et al. Liver atrophycomplicating benign bile duct strictures. Am, J, Surg İ986; 152:294-300
  5. Kaneko T, Nakao A, Takagi H. Experimental studies of new embolizing material for portal vein embolization. Hepato-Gastroenterology 2000; 47:790-4
  6. Yachida S, İkeda K, Kaneda K, Goda F, Maeba T, Maeta H. Preventive effect of preoperative portal vein ligation on endotoxin-induced hepatic failure in hepatectomized rats js associated with reduced tumour necrosis factor a production. Br J Surg 2000; 87:1382-90
  7. Azoulay D, Castaing D, Krissat J, et al. Percutaneous portal vein embolization increases the feasibility and safety of major liver resection for hepatocelluler carcinoma in injured liver. Ann Surg 2000; 232:665-72
  8. Starzl TE, Porter KA, Kashiwagi N. Portal hepatotropic factors, diabetes mellitus and acute liver atrophy, hypertrophy and regeneration. Surgery 1975; 141:843-58
  9. S Lee, et al; Liver regeneration after portacaval transportation in rats. Surgery 1975; 77:144-9
  10. Hadjis NS, Blenkham Jl, Hatzis G, Demianiuk C. Pathologic and hemodynamic sequelae of unilobar biliary obstruction and associated liver atrophy. Surgery 1991; 109:671-6
  11. Giest J, Ryan CJ, Benjamin IS, Blumgart LH. Portocaval transposition and subsequent partial hepatectomy in the rat: Effect on liver atrophy, hypertrophy and regenerative hyperplasia. Br J Exp Path 1977; 58:140-6
  12. Hadjis NS, Carr D, Blenkharn I, Banks L, Gibson R, Blumgart LH. Expectant management of patient with unilateral hepatic duct stricture and liver atrophy. Gut 27; 1223-7
  13. Lorigan JG, Charnsangavej C, Carrasco CH, Richli WR, Wallece S. Atrophy with compensatory hypertrophy of the liver in hepatic neoplasms: radiographic findings. Am J Radiol 1988; 150:1291-5
  14. Inaba S, et al. Combination of preoperative embolization of the right portal vein and hepatic artery prior to major hepatectomy in high-risk patient. Hepato-Gastroenterology 2000; 47:1077-81
  15. Denys AL, Abehsera M, Sauvanet A. Failure of right portal vein ligation to induce left lobe hypertrophy due to intrahepatic portoportal collaterals. Am J Radiol 1999; 173:633-5