jaundice
TRANSCRIPT
THE JAUNDICED PATIENT
BY
DR.SEFEEN SAIF ATTYA
SOHAG TEACHING HOSPITAL
JAUNDICE
Jaundice is a syndrome ,the hallmark of which is yellowish discoloration of body tissues produced by an excess of circulating bilirubin (conjugated or unconjugated)
Normal serum bilirubin is ranging from 0.1-1 mg % and jaundice is detected clinically in the sclera of the eye when the level rises above 2.5 mg%
It is most evident in tissues which have a high elastic tissue content (skin –sclera of the eye – blood vessels)
BILIRUBIN METABOLISM Bilirubin is formed from haem (a compound of iron and
protoporphyrin) , Haem comes from breakdown of mature red cells in the reticuloendothelial system
This unconjugated bilirubin which is water insoluble is toxic and transported attached to plasma proteins to the liver cells
In the hepatic cells it is conjugated into water soluble bilirubin (conjugated bilirubin)
Conjugated bilirubin is excreted into the bile canaliculi Disturbance of the flow of bile led to stagnation and retention of conjugated bilirubin (cholestasis)which may occur in the intrahepatic bile ducts (intrahepatic cholestasis)or in the extrahepatic bile ducts (extrahepatic cholestasis)
Mechanisms of jaundice(1)Excess bilirubin production
(2)impaired uptake and transport of bilirubin by the hepatocytes (3)failure of conjugation
(4)Impaired secretion of conjugated bilirubin into the bile canaliculi (5)Impaired bile flow subsequent to secretion by the hepatocyte
Thus there are 3 categories of jaundice Haemolytic jaundice)1(Hepatocellular jaundice)2-4(
( Obstruvtive jaundice)5
Classification of JaundiceDefect in bilirubin metabolismPredominant hyperbilirubinemiaExamples
Increased productionUnconjugatedCongenital hemoglobinopathies, hemolysis, multiple transfusions, sepsis, burns
Impaired hepatocyte uptakeUnconjugatedGilbert’s disease, drug induced
Reduced conjugationUnconjugatedNeonatal jaundice, Crigler–Najjar syndrome
Impaired transport and excretionConjugatedHepatitis, cirrhosis, Dubin–Johnson syndrome, Rotor syndrome
Biliary obstructionConjugatedCholedocholithiasis, benign strictures, chronic pancreatitis, sclerosing
cholangitis, periampullary cancer, cholangiocarcinoma
The term cholestatic jaundice may be intrahepatic (hepatic disease impairing transport of conjugated bilirubin from the hepatocyte to bile canaliculi and intrahepatic
ducts)
or Extrahepatic (from large bile duct obstruction )
The later is referred to as surgical jaundice
JAUNDICE DUE TO INCREASED BILIRUBIN LOAD
(HAEMOLYTIC JAUNDICE-UNCONJUGATED HYPERBILIRUBINAEMIA)
Hereditary spherocytosisSickle cell anaemia Thalassaemia acquired haemolytic anaemiaIncompatible blood transfusion Severe sepsisdrugs
DISTURBED BILIRUBIN UPTAKE & CONJUGATION
Grigler –najjar familial non-haemolytic jaundice
Familial neonatal hyperbilirubinaemiaGilbert’s familial non haemolytic
hyperbilirubinaemiaViral hepatitis Hepato-toxinscirrhosis
DISTURBED BILIRUBIN EXCRETION (CHOLESTASIS)
A- intrahepatic cholestasis CirrhosisVira hepatitisDrugs(chlorpromasine- oral contraceptives)Dubin-johnson familial conjugated
hyperbilirubinaemiaPrimary biliary cirrhosis(chronic non-
suppurative destructive cholangitis)
B-EXTRAHEPATIC CHOLESTASIS 1- INSIDE DUCT
Ductal stonesF.B.(broken T-tube)Parasites (hydated liver fluke, round worm)Titanium clips internalization
2-IN DUCT WALLCongenetal atresia traumatic stricture Sclerosing cholangitis
Bile duct tumours 3 -OUTSIDE WALL
Cancer head pancreas cacer ampulla of vaterPacreatitis
Porta hepatis metastasis
INVESTIGATION OF THE JAUNDICED PATIENT
Parenchymal(hepatocytes)
ALT AST
canalicular(biliary)ALP, 5'NT, GGT
synythetic Function and metabolism
INR, bilirubin, albumin
A- LABOLATORY TESTS
B- Imaging studiesNON-INVASIVE METHODS
1 -ULTRASOUND Ultrasonography is both sensitive and specific in
detecting gallbladder stones and dilatation of bile ducts. Ultrasound usually misses stones in the common duct.
When ultrasound shows dilated bile ducts, THC will nearly always be technically successful.
ultrasound image demonstrate the normal gallbladder The thin wall of the gallbladder is seen as a white ring surrounding bile, which appears as a black fluid. The wall thickness should be less than 3 mm in adults .
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2-SPIRAL C.T. Spiral C.T. with I.V. contrast enhancement is
essential in all patients with suspected tumours I.V. superparamagnetic ferric oxide (endorem)
which yields even greater definition This shows liver tumours as white areas (no
kupffer cells) against a black background (contrast in kupffer cells)
CT image demonstrates a large gallstone in the gallbladder
3-RADIONUCLIDE SCAN (HIDA SCAN) Technetium 99m-labeled derivatives of
iminodiacetic acid (IDA) are excreted in high concentration in bile and produce excellent gamma camera images.
Following intravenous injection of the radionuclide, imaging of the bile ducts and gallbladder normally appears within 15–30 minutes.
4 -Magnetic Resonance Imaging Available since the mid-1990s, MRI provides
anatomic details of the liver, gallbladder, and pancreas similar to those obtained from CT.
Using MRI with newer techniques and contrast materials, accurate anatomic images can be obtained of the bile ducts and the pancreatic duct.
It has a sensitivity and specificity of 95 and 89%, respectively, at detecting choledocholithiasis.
5 -MAGNITIC RESONANCE CHOLANGIOPANCREATOGRAPHY (MRCP)
Is completely non-invasive and does not require injection of contrast
It is a specialized type of MRI that uses radio waves and magnets to obtain pictures of the bile ducts
INVASIVE METHODS 1 -PERCUTANEOUS TRANSHEPATIC
CHOLANGIOGRAPHY PTC is performed by passing a fine needle through
the the hepatic parenchyma and into the lumen of a bile duct. Water-soluble contrast material is injected, and x-ray films are taken.
The technical success is related to the degree of dilatation of the intrahepatic bile ducts. THC is especially valuable in demonstrating the biliary anatomy in patients with lesions of the proximal bile duct, or when ERCP has been unsuccessful.
These two radiographs demonstrate the skinny needle used to puncture the bile duct during PTC .
THC should not be done in patients with cholangitis until the infection has been controlled with antibiotics.
Virtually all patients should be premedicated with antibiotics regardless of whether they have cholangitis or not
septic shock has been produced by sudden inoculation of organisms from bile into the systemic circulation
2 -ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY (ERCP) ERCP involves cannulating the sphincter of
Oddi under direct vision through a side-viewing duodenoscope.
Usually, it is possible to opacify the pancreatic as well as the bile ducts.
It is usually the preferred method of examining the biliary tree in patients with presumed choledocholithiasis or obstructing lesions in the periampullary region.
The endoscope transmits dynamic images of the lumen of the gut allowing the physician to carefully examine the
lining. During the procedure air is blown into the digestive tract to expand mucosal folds making examination thorough
The ERCP is usually performed in the radiology department under fluoroscopic guidance. The patient is sedated, and the endoscope inserted through the mouth into the duodenum. The physician looks for the major duodenal papilla to insert the guide catheter to perform the retrograde
study of the biliary tree
This picture shows the catheter from the endoscope within the papilla. This allows the physician to perform a
retrograde filling of the biliary tree.
This picture shows the major duodenal papilla before the endoscope is inserted .
3-Endoscopic ultrasonography (EUS) With the considerable advances in transducer
technology and related image-processing software ,EUS has been shown to be extremely useful for the diagnosis and staging of bile duct and proximal pancreatic pathology
A more recent development is intraductal ultrasonography (IDUS) where a fine transducer probe is introduced in the bile or pancreatic duct at ERCP
4-Laparoscopy with laparoscopic contact US
This provides the most senitive and reliable assessment ,staging of hepatic ,biliary and pancreatic cancers
C- LIVER BIOPSY Should not be done until a bleeding tendency
has been excluded The procedure is hazardous in the presence
of ascites Hydatid disease of the liver must be excluded
as accidental puncture can spread the disease throughout the peritonial cavity or give rise to anaphylactic shock
SURGICAL JAUNDICESURGICAL JAUNDICE
1-Gallstones and ductal calculi
2 -Pancreatic disease
3 -biliary malignancy
4-hepatic malignancy
5 -benign bile duct strictures
1-GALLSTONES & DUCTAL CALCULI
Gallstones are very common worldwide ,the prevalence is 18% with a female preponderance (2-1)
The currentaly accepted classification recognizes 3 main types of gallstonesA-cholesterol stones: essentially metabolic stones that form in the gall bladder B-black pigment stones : form in the gall bladder and consist of bilirubin pigments with a varrying amount of cholesterolC- brown pigment stones :form in the bile ducts (primary ductal stones) ,they are amorphous soft stones that consist of calcium bilirubinate and palmitate bound in a matrix of organic material
DUCTAL CALCULI
Ductal calculi can result from migration of gallstones through a patent cystic duct (secondary ductal calculi –black pigment calculi) or formed de novo in the ducts (primary ductal calculi-brown pigment stones)
Ductal calculi may form around foreign bodies within the lumen of the common bile duct ,a common example of this nowadays is caused by the internalization of titanium metal clips used to secure the medial end of the cystic duct stump during laparoscopic cholecystectomy ,the patient present several months after an uneventful L.C.with jaundice and /or cholangitis
ERCP demonstrates stones in the common bile duct on the left radiograph, and cystic duct on the right radiograph
CLINICAL TERMS TO DESCRIBE DUCTAL CALCULI
UNSUSPECTED STONESAre those discovered accidentally when routine intraoperative cholangiography is performed ,these stones are usually small and floating and the C.B.D. is of normal caliber
MISSED STONESAre stones missed after intervention (surgical or endoscopic) that fails to achieve complete ductal clerance
Ductal calculi that diagnosed within 2 years of the intervention are described as missed stones
RECURRENT STONES
Present at least 2 years after the first intervention
These tend to be primary ductal stones (brown pigment stones)and are almost always
associated with dilatation of the C.B.D .
MANAGEMENT
1 -GALLSTONES AND DUCTAL CALCULI
Cholecystectomy is only indicated for symptomatic gallstones and their copmlications (acute cholecystitis,acute pacreatitis ,jaundice due to ductal calculi)
There is now firm evidence from several prospecive randomized trials that “early” cholecystectomy for acute cholecystitis (operation within the same hospital admission )is superior to “delayed” cholecystectomy (2-3 month after resolution of the attack )provided the patient is fit for surgery and anaesthesia
operative cholangiogram. The catheter is inserted into the cystic duct and contrast media injected as radiographs are taken. The entire distal biliary tree is demonstrated without stone or dilation of the ducts. This confirms that stones are limited to the gallbladder, which was removed
The benefits of early cholecystectomy include Reduced overall morbidity Reduced hospital stay Prevention of further attacks that may occur in
patients managed by yhe delayed cholecystectomy policy
Unfit patients should be treated conservatively in the first instance with the expectation that acute cholecystitis will resolve in 80% of cases
If this conservative treatment fails or in cases with empyema of the G.B. an ulrasound laparoscopically guided cholecystostomy or microcholecystostomy (under u/s guidance ) will tide the patient over the critical illness
The current treatment for patients with concomitant ductal stones is preoperative endoscopic stone extraction followed by cholecystectomy preferably during the same hospital admission
Single stage L.C. and ductal stone clerance either by the transcystic route (stones <6mm )or by laparoscopic supraduodenal direct C.B.D. exploration (large stones) is prefered in some centres instead of the two-stage approach
A large cholesterol stone (white arrow) is released from a wire basket into the duodenum
sphincterectomy (blue arrow) was performed to allow a stone to be removed and release
stagnated bile into the duodenum
This image demonstrates the completion of the ERCP. A stent has been placed in the common bile duct (white arrow). After a stone was removed
T-tube cholangiogram. The tube inserted into the common bile duct. As you can see the tube is long extending to the outside of the body .
22--PANCREATIC DISEASEPANCREATIC DISEASE
Periampullary cancers are usually resectable and are treated by pancreatoduodenectomy if the patient is fit for major surgery
By contrast most proximal pancreatic adenocarcimomas are not resectable and are managed palliatively (biliary bypass) with stenting (by interventional endoscopy or interventional radiology )
In patients with jaundice thought to be due to chronic pancreatitis the options are between a formal pancreatoduodenectomy or subtotal resection of the head leaving a rim of pancreas in the duodenal curve and releasing the transpancreatic duct (Beger’s procedure)
Amodification of Beger’s procedure involves transection of the bile duct just above the pancreas with reimplantation into the duodenum , Both operations preserve the duodenum
If there is doubt concerning the diagnosis the appropriate procedure is a formal pancreatoduodenectomy
3 -BILIARY TRACT MALIGNANCIES
A-CARCINOMA OF THE GALLBLADDER is the most common malignancy of the
biliary tract and accounts for 3-4 % of all gastrointestinal malignancies
It is a disease of old age and carries a poor prognosis
Gall stones are present in 75-90% of cases
B-BILE DUCT CANCERS (cholangiocarcinomas)1-intrahepatic:from major hepatic ducts
2-proximal:from right and left hepatic ducts ,hilar confluence and proximal CHD
3-middle :from distal CHD ,cystic duct and its confluence with the CHD
4-distal: included with periampullary tumoursRadiologically they give rise to a stricture with proximal dilatation
TREATMENT OF BILIARY MALIGNANCY
cacinoma of the gall bladder is a miserable disease that is always incurable when diagnosed clinically
Palliation of the jaundice and itching due to involvement of the C.H.D. is achieved by
endoscopic or radiological stenting In the rare instance when the disease is
resectable and the patient is fit resection is indicated
If the tumour invades the hepatic parenchyma a right hepatectomy with resection of the C.B.D.and nodal clearance is performed
In selected cases if the lesion is confined to the G.B. the liver resection is limited to the gall
bladder bed
Middle and distal bile duct tumours are resected with removal of the pancreas and duodenum
Proximal tumours (hilar) may be resected if the patient’s condition is good . The resection extendes beyond the bifurcation and must always include the caudate lobe
Non-resectable or inoperable bile duct tumours can be either stented or bypassed surgically
Expandable metalic wall stents give better palliation than plastic stents
There is some debate as to whether surgical palliation should include a gastroenterostomy in addition to biliary bypass
4 -HEPATIC MALIGNANCY
hepatic malignancy can be primary (H.C.C.)
or secondary from a primary in another site The presence of jaundice in association
with liver tumours indicate extensive involvement of the liver parenchyma with the patient being incurable and unlikely to benefit from any form of treatment
HEPATOCELLULAR CARCINOMA may arise on a morphologically normal liver or
complicate established cirrhosis The aetiology is varied but the vast majority is the
result of HBV or HCV Some cases are associated with oral
cotraceptives and androgenic steroids Ingestion of food contaminated with aflatoxins
produced by fungus Aspergillus flavus has been incriminated in some cases
Symptoms include pain in the right hypochondrium ,hepatic enlargement and ascites
In some cases the tumour gives rise to systemic manifestations including polycythemia, carcinoid syndrome ,hypoglycaemia and hypercalcaemia
Raised alpha-fetoprotein is present in 60-70% of cases
HEPATIC METASTASIS 90% of hepatic tumours are metaststic from
primary in the gastrointestinal tract ,pancreas,lungs and breast
The most common are secondary hepatic deposits from colorectal cancer
Morphologically on laparoscopic inspection secomdary hepatic tumours may be
1- discretely nodular : (single or muliple)2-miliary: widespread small seedling deposits
TREATMENT OF HEPATIC TUMOURS
Hepatocellular carcinoma Only patients who are not jaundiced ,have no
evidence of disease elsewhere (including hepatic nodes) and are fit with good liver functions are suitable for hepatic resection
Hepatectomy is not usually possible in patients who develop the disease on a backgroud of cirrhosis ,treatment is by in situ ablation or embolization
Secondary tumours usually from colorectal cancer are a much
more common problem There is a definite place for surgical resection
if the disease is confined to one side and there are no more than 3 deposits
The most imortant factor infuencing outcome after surgical resection is a tumour free margin of at least 1.5 cm
Systemic chemotherapy with high dose 5FU with folinic acid induces disease regression in 30% of cases
There is no evidence that regional hepatic
intra-arterial chemotherapy is any more effective than systenic chemotherapy
Only discretely nodular disease is potentially curable by surgical resection
Only 5% of patients with hepatic metastasis are suitable for this treatment
Palliation can be obtained by systemic chemotherapy and by insitu ablation techniques provided that the extent of hepatic involvement is <25%
IN SITU ABLATION
In situ ablation either laparoscopic or image –guided can be achieved by:
1-alcoholinization (small lesions <2 cm)
2-cryosurgery with high eficiency liquid nitrogen
3-radiofrequency thermal ablation
4-interstitial laser hyperthermia
The advantage of in situ ablation is that it can be repeated if new lesions or recurrence at the treated sites detected on follow up
The early results of a combination of in situ ablation with systemic chemotherapy look very promising
5 -BENIGN BILE DUCT STRICTURES
1-Iatrogenic bile duct injury during cholecystectomy
2-the constriction and compression of the intrapancreatic segment of the CBD by the pseudotumour of chronic pancreatitis
3-parasitic infestation of the biliary tract
4-multiple strictures of sclerosing cholangitis
ERCP Radiograph shows a stricture of the common bile duct.
SCLEROSING CHOLANGITIS
Is arare chronic disease characterized by fibrous thickening of the intrahepatic or extrahepatic bile ducts often associated with multiple strictures
CAUSES
PRIMARY SCLEROSING CHOLANGITIS: the exact cause of which remains unknown ,probably an autoimmune disease
SECONDARY TO :ductal stones,congenital lesions or operative trauma
PRESENTATION the disease is 2-3 times more common in men
than in women Symptoms include malaise ,jaundice,abdominal
pain ,anorexia,weight loss ,fever,pruritisAbout one third of cases are associated with
chronic inflammatory bowel disease (U.C. or C.D.)
Hepatitis virus does not cause primary sclerosing cholangitis
DIAGNOSIS The diagnosis of primary sclerosing cholangitis is based on
clinical suspicion confirmed by cholangiographic demonstration of multiple strictures separated by segments of ducts of normal or increased diameter (beaded apperance)
Liver biopsy confirm the diagnosisDIFFRENTIAL DIAGNOSIS. The clinical and histologic patterns of S.C. overlap those of
primary biliary cirrhosis ,however the latter disease typically affects middle aged women with keratoconjunctivitis sicca,hyperpigmentation and high titres of A.M.A.
Cholangiography allows diffrentiation as primary biliary cirrhosis never involves extrahepatic ducts
TREATMENT(controversial) If a major stricture involves extrahepatic duct (bypass
procedure) Other cases have been treated successfully by T.tube
drainage of the C.B.D. and by stenting of strictures High dose steroids can be effective in relieving the fibrous
strictures The oral adminstration of ursodiol shows promise ,it
reduces serum bilirubin , decreases clinical jaundice ,decreases serum transaminase levels and improve symptoms
Liver transplantation is the only effective treatment of end stage liver disease
PROGNOSIS Some patients die from liver failure within
months of diagnosis Others may live relatively symptom free for
many years 10% of patients with sclerosing cholangitis
will develop bile duct carcinoma
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