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**** [[Biopsy|Biopsies]] are small: multiple [[Biopsy|biopsies]] required | **** [[Biopsy|Biopsies]] are small: multiple [[Biopsy|biopsies]] required | ||
**** Taken 'blindly' | **** Taken 'blindly' | ||
****Indications for obtaining a biopsy specimen, divided according to the type of clinical question framed, are as follows: | |||
***** Evaluation of abnormal hepatic laboratory test results | |||
***** Confirmation of diagnosis and prognostication | |||
***** Suspected hepatic neoplasm | |||
***** Diagnosis of cholestatic liver disease | |||
***** Evaluation of infiltrative or granulomatous disease | |||
***** Following a case of liver transplantation to evaluate and manage rejection | |||
***** To evaluate unexplained jaundice or suspected drug reactions The biopsy specimen may be used to identify or exclude possible etiologies for physical or laboratory abnormalities. Although various disease states may present similarly, diagnostic histologic patterns exist when used in the context of clinical presentation. For example, infiltration of the hepatic parenchyma by fat may exist in diseases due to alcohol abuse, hepatitis C, diabetes, obesity, or combinations thereof. For each disease state, histologic clues exist that distinguish one from the other.<sup> [[null 5], [null 6], [null 7]]</sup> Liver biopsy plays little role in the determination of the organism responsible for systemic infection because blood cultures generally are revealing. The notable exceptions are intrahepatic tuberculosis and ''Mycobacterium avium'' complex (MAC). Another indication for biopsy is the determination of the extent of histologic change present in a biopsy specimen. This involves scoring systems for the degrees of inflammation and fibrosis noted by the pathologist. Many systems exist for describing the microscopic findings, ranging from simplistic to complex. The majority of scoring systems report the degree of inflammation as the grade of the disease and the amount of fibrosis as the stage. An example here would be the finding of moderate inflammation (grade 3) in a specimen from a cirrhotic (stage 4) liver. The third set of indications is the monitoring of the progression of disease or of treatment efficacy. For example, liver biopsy specimens frequently are used to evaluate and treat rejection following liver transplantation. Repeated biopsies are used less frequently to monitor progression of diseases such as primary biliary cirrhosis, chronic hepatitis C,<sup> [[null 8]] </sup>or alcoholic liver disease. Regardless of the indication for the biopsy, identifying which information the procedure is anticipated to yield is important. | |||
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ; Associate Editor(s)-in-Chief: Sudarshana Datta, MD [2]
Overview
Diagnostic Study of Choice
Gold standard/Study of choice:
- Liver biopsy is the gold standard test for the diagnosis of cirrhosis.
- The following result of [gold standard test] is confirmatory of [disease name]:
- Result 1
- Result 2
- The [name of investigation] should be performed when:
- The patient presented with symptoms/signs 1. 2, 3.
- A positive [test] is detected in the patient.
- [Name of the investigation] is the gold standard test for the diagnosis of [disease name].
- The diagnostic study of choice for [disease name] is [name of investigation].
- There is no single diagnostic study of choice for the diagnosis of [disease name].
- There is no single diagnostic study of choice for the diagnosis of [disease name], but [disease name] can be diagnosed based on [name of the investigation 1] and [name of the investigation 2].
- [Disease name] is mainly diagnosed based on clinical presentation.
- Investigations:
- Among patients who present with clinical signs of [disease name], the [investigation name] is the most specific test for the diagnosis.
- Among patients who present with clinical signs of [disease name], the [investigation name] is the most sensitive test for diagnosis.
- Among patients who present with clinical signs of [disease name], the [investigation name] is the most efficient test for diagnosis.
Features of liver biopsy are as follows:[1][2][3][4][5][6][7][8]
- Cirrhosis is primarily a histological diagnosis. The gold standard for diagnosis of cirrhosis is liver biopsy.
- Sample of the liver is obtained by:[9]
- Percutaneous
- Transjugular
- Laparoscopic radiographically- guided fine-needle approach
- Percutaneous biopsy of focal lesions may be performed in combination with either ultrasound or CT imaging.[10]
- Percutaneous liver biopsy remains the cornerstone of diagnosis. It is quick and simple to perform liver biopsy in a patient with normal platelet count and INR.[11]
- Histologically, cirrhosis may be classified as micronodular, macronodular, or mixed, but this classification is nonspecific to the etiology.
- Histology of the liver may change as the disease progresses, and serological markers are much more specific.
- A biopsy is not necessary if the clinical, laboratory, and radiologic data suggest cirrhosis.
- Liver biopsy may be suggestive of etiology:
- Alcoholic liver disease : Liver biopsy may show hepatocyte necrosis, presence of mallory bodies, neutrophilic infiltration and perivenular inflammation.
- Primary biliary cirrhosis : Gold standard diagnostic modality is the detection of antimitochondrial antibodies along with liver biopsy as confirmation if florid bile duct lesions.
- There is a small but significant risk of liver biopsy, and cirrhosis itself predisposes for complications due to liver biopsy.[12]
- Risks of liver biopsy include:
- Hemorrhage
- Biliary peritonitis
- Hematoma
- Perforation of other viscera
- Mortality rates of between 0.01% and 0.1%
- Patients with moderate coagulopathy:
- Plugged liver biopsy : injection of gelatin sponges or metal coils down the tract after biopsy
- Laparoscopic liver biopsy performed on a sedated patient with moderate coagulopathy
- Advantage: allows direct visualisation of the liver
- Patients with severe clotting disorders:
- Transjugular liver biopsy:
- Risk of intraperitoneal bleed is less
- Disadvantages:
- Biopsies are small: multiple biopsies required
- Taken 'blindly'
- Indications for obtaining a biopsy specimen, divided according to the type of clinical question framed, are as follows:
- Evaluation of abnormal hepatic laboratory test results
- Confirmation of diagnosis and prognostication
- Suspected hepatic neoplasm
- Diagnosis of cholestatic liver disease
- Evaluation of infiltrative or granulomatous disease
- Following a case of liver transplantation to evaluate and manage rejection
- To evaluate unexplained jaundice or suspected drug reactions The biopsy specimen may be used to identify or exclude possible etiologies for physical or laboratory abnormalities. Although various disease states may present similarly, diagnostic histologic patterns exist when used in the context of clinical presentation. For example, infiltration of the hepatic parenchyma by fat may exist in diseases due to alcohol abuse, hepatitis C, diabetes, obesity, or combinations thereof. For each disease state, histologic clues exist that distinguish one from the other. [[null 5], [null 6], [null 7]] Liver biopsy plays little role in the determination of the organism responsible for systemic infection because blood cultures generally are revealing. The notable exceptions are intrahepatic tuberculosis and Mycobacterium avium complex (MAC). Another indication for biopsy is the determination of the extent of histologic change present in a biopsy specimen. This involves scoring systems for the degrees of inflammation and fibrosis noted by the pathologist. Many systems exist for describing the microscopic findings, ranging from simplistic to complex. The majority of scoring systems report the degree of inflammation as the grade of the disease and the amount of fibrosis as the stage. An example here would be the finding of moderate inflammation (grade 3) in a specimen from a cirrhotic (stage 4) liver. The third set of indications is the monitoring of the progression of disease or of treatment efficacy. For example, liver biopsy specimens frequently are used to evaluate and treat rejection following liver transplantation. Repeated biopsies are used less frequently to monitor progression of diseases such as primary biliary cirrhosis, chronic hepatitis C, null 8 or alcoholic liver disease. Regardless of the indication for the biopsy, identifying which information the procedure is anticipated to yield is important.
- Transjugular liver biopsy:
Sequence of Diagnostic Studies
The [name of investigation] should be performed when:
- The patient presented with symptoms/signs 1, 2, and 3 as the first step of diagnosis.
- A positive [test] is detected in the patient, to confirm the diagnosis.
References
- ↑ Williams EJ, Iredale JP (1998). "Liver cirrhosis". Postgrad Med J. 74 (870): 193–202. PMC 2360862. PMID 9683971.
- ↑ Blomley MJ, Lim AK, Harvey CJ, Patel N, Eckersley RJ, Basilico R, Heckemann R, Urbank A, Cosgrove DO, Taylor-Robinson SD (2003). "Liver microbubble transit time compared with histology and Child-Pugh score in diffuse liver disease: a cross sectional study". Gut. 52 (8): 1188–93. PMC 1773750. PMID 12865280.
- ↑ Kim CK, Lim JH, Lee WJ (2001). "Detection of hepatocellular carcinomas and dysplastic nodules in cirrhotic liver: accuracy of ultrasonography in transplant patients". J Ultrasound Med. 20 (2): 99–104. PMID 11211142.
- ↑ Abdi W, Millan JC, Mezey E (1979). "Sampling variability on percutaneous liver biopsy". Arch. Intern. Med. 139 (6): 667–9. PMID 443970.
- ↑ Bedossa P, Dargère D, Paradis V (2003). "Sampling variability of liver fibrosis in chronic hepatitis C". Hepatology. 38 (6): 1449–57. doi:10.1016/j.hep.2003.09.022. PMID 14647056.
- ↑ Regev A, Berho M, Jeffers LJ, Milikowski C, Molina EG, Pyrsopoulos NT, Feng ZZ, Reddy KR, Schiff ER (2002). "Sampling error and intraobserver variation in liver biopsy in patients with chronic HCV infection". Am. J. Gastroenterol. 97 (10): 2614–8. doi:10.1111/j.1572-0241.2002.06038.x. PMID 12385448.
- ↑ Bravo AA, Sheth SG, Chopra S (2001). "Liver biopsy". N. Engl. J. Med. 344 (7): 495–500. doi:10.1056/NEJM200102153440706. PMID 11172192.
- ↑ Rockey DC, Caldwell SH, Goodman ZD, Nelson RC, Smith AD (2009). "Liver biopsy". Hepatology. 49 (3): 1017–44. doi:10.1002/hep.22742. PMID 19243014.
- ↑ Cholongitas E, Quaglia A, Samonakis D, Senzolo M, Triantos C, Patch D, Leandro G, Dhillon AP, Burroughs AK (2006). "Transjugular liver biopsy: how good is it for accurate histological interpretation?". Gut. 55 (12): 1789–94. doi:10.1136/gut.2005.090415. PMC 1856467. PMID 16636018.
- ↑ Schirmacher P, Fleig WE, Tannapfel A, Langner C, Dries V, Terracciano L, Denk H, Dienes HP (2004). "[Bioptic diagnosis of chronic hepatitis. Results of an evidence-based consensus conference of the German Society of Pathology, of the German Society for Digestive and Metabolic Diseases and of Compensated Hepatitis (HepNet)]". Pathologe (in German). 25 (5): 337–48. doi:10.1007/s00292-004-0692-7. PMID 15278290.
- ↑ Tannapfel A, Dienes HP, Lohse AW (2012). "The indications for liver biopsy". Dtsch Arztebl Int. 109 (27–28): 477–83. doi:10.3238/arztebl.2012.0477. PMC 3402072. PMID 22833761.
- ↑ Grant, A (1999). "Guidelines on the use of liver biopsy in clinical practice". Gut. 45 (Suppl 4): 1–11. PMID 10485854.
The main cause of mortality after percutaneous liver biopsy is intraperitoneal haemorrhage as shown in a retrospective Italian study of 68,000 percutaneous liver biopsies in which all six patients who died did so from intraperitoneal haemorrhage. Three of these patients had had a laparotomy, and all had either cirrhosis or malignant disease, both of which are risk factors for bleeding.