Virtual Microscopy

 
  Virtual Microscopy > Gastrointestinal > GI Histology (LIVER)

 

Case 1: Acute Hepatitis A

This 40 yo woman was seen by her primary care physician for 2 days of jaundice and abdominal discomfort following a 7 day period of flu-like symptoms including fever and arthralgias. She is taking no medications and denies prior blood transfusions, use of illicit drugs, and excessive ethanol ingestion. Laboratory evaluation revealed the following: ALT 883 IU/L, AST 409 IU/L, total bilirubin 10.7 mg/dl. Hepatitis B and C serologies were negative, but IgM anti-HAV was positive. Upon further questioning, she revealed that a friend was experiencing similar symptoms and they had dined at a new restaurant about a month ago.

Slides: [normal liver (including normal gallbladder)] [patient's liver]

Gross images: [liver architecture] [normal liver (reticulin stain]

  1. Review the slide of normal liver. Be able to identify the following normal structures: hepatocytes, bile ducts, portal triads, central veins, and sinusoids.
  2. Is the normal lobular architecture maintained in the patient's liver?
  3. Are the hepatocytes normal appearing? If not, how do they differ from normal?
  4. What cell types are present in the patient's biopsy that are not seen in normal liver?
  5. Can you explain the elevated liver chemistries?

 

Case 2: Alcoholic Cirrhosis

This 45-year-old man was admitted to the hospital for evaluation of hematemesis (vomiting blood). He had a history of consuming one pint of whiskey per day for 20 years, but he had recently increased his intake. Two days prior to admission, he developed the abrupt onset of nausea and vomiting with bright red blood in the vomitus. Because of persistent hematemesis the patient came to the emergency room, where he was jaundiced and had ascites. Laboratory data included a hematocrit of 20, serum bilirubin of 4.5 mg/dl (direct 3.2), AST 100 IU/L, ALT 84 IU/L, serum albumin 2.7 gm/dl, and abnormal clotting function. The patient was stabilized, and underwent a liver biopsy was performed.

Slides: [patient's liver]

  1. What has happened to the hepatic architecture in the patient's liver biopsy?
  2. Are there any morphologic differences in the hepatocytes, especially in their cytoplasm?
  3. How might the abnormal liver chemistries, albumin and blood clotting function be related to the liver pathology?

 

Case 3: Chronic Hepatitis due to Alpha-1 Anti-trypsin Deficiency

A 36-year-old woman with a family history of liver chronic liver disease and emphysema presents with elated liver function tests (bilirubin of 1.0 mg/dl, AST 147 IU/L, ALT 120 IU/L, serum albumin and clotting parameters normal). A liver biopsy was performed.

Slides: [normal liver] [alpha-1 anti-trypsin deficiency]

  1. In comparison to normal liver, describe any changes in the hepatic architecture.
  2. Are there any morphologic differences in the hepatocytes, especially in their cytoplasm? Is any particular hepatocyte zone (1, 2 or 3) involved?
  3. How might the abnormal liver chemistries, albumin and blood clotting be related to the liver pathology?
  4. Is the patient’s family history related to your findings in the liver?

 

Case 4: Primary Biliary Cirrhosis

A 53-year-old woman presents with yellowing of her eyes and increasingly severe and irritating itching of her skin. On physical exam she is jaundiced, and has severe scratch marks covering her back except for the central most location. Her liver chemistries show a markedly elevated serum bilirubin and alkaline phosphatase but essentially normal transaminases (ALT and AST), albumin and clotting factors. An anti-mitochondrial (AMA) serum serology is strongly positive at a titer of 1:512. A liver biopsy is performed.

Slides: [normal liver] [primary biliary cirrhosis]

  1. What has happened to the hepatic architecture in the patient’s liver biopsy?
  2. Are there any morphologic differences in the bile ducts?
  3. How might the abnormal liver chemistries be related to the liver pathology and the patients signs and symptoms?

 

Case 5: Chronic Cholelithiasis with Cholecystitis

A 47-year-old obese, multiparous woman complained of abdominal pain, gas, and intolerance to fatty foods. Her physician performed an ultrasonic examination and found gallstones. The only treatment was advice to avoid foods that made her feel ill and to lose weight. Three years later, the patient returned with a one-day history of severe, cramping abdominal pain that radiated through to her back, nausea and vomiting. An ultrasound examination now showed dilated intrahepatic bile ducts. A cholecystectomy was performed and numerous gallstones were present.

Slides: [normal gallbladder] [chronic cholecystitis]

  1. Review the slide of normal gallbladder. Be able to identify the following normal structures: mucosa, muscularis, adventitia.
  2. What new cell types are present in the patient’s gallbladder wall?
  3. Can you relate the gallstones to the clinically dilated intrahepatic bile ducts?