Alcoholic Liver Disease

Snapshot

  • A 55-year-old man presents to his primary care physician for an annual examination. He currently does not have any acute complains; however, he continues drinking multiple alcoholic beverages daily. He noticed when he tries to stop drinking alcohol, he becomes tremulous and feels anxious. Laboratory studies demonstrate a transaminitis. An abdominal ultrasound demonstrates hepatic steatosis.

Introduction

  • Overview
    • excessive alcohol use can lead to
      • alcoholic fatty liver disease  
      • alcoholic hepatitis
      • cirrhosis
  • Pathophysiology
    • ethanol consumption leads to 
      • promotion of lipid accumulation within the liver
      • liver cell injury due to increased oxidative stress
      • decreased intake of vitamins
    • ethanol metabolism leads to the production of
      • acetaldehyde
      • reduced nicotinamide adenine
  • Associated conditions
    • malnutrition
      • Wernicke encephalopathy
      • Korsakoff syndrome
  • hepatic encephalopathy

Presentation

  • Patients are typically asymptomatic
    • symptoms depend how severe the liver damage is and if the patient developed cirrhosis
  • Symptoms/physical exam
    • palmar erythema
    • gynecomastia
    • testicular atrophy
    • spider angiomas
    • jaundice
    • caput medusae
  • hematemesis or melena

Imaging

  • Abdominal ultrasound
    • indication
  • to evaluate liver morphology, which may demonstrate hepatic steatosis or cirrhosis

Studies

  • Serum labs
    • aspartate aminotransferase (AST) and alanine aminotransferase (ALT)
      • elevated AST to ALT ratio > 2  
    • γ-glutamyl transpeptidase (GGT)
      • often elevated
        • not specific for alcoholic liver disease
    • macrocytosis
      • suggestive of longstanding disease
  • secondary to decreased vitamin B12 or folate deficiency or alcoholic toxicity

Differential

  • Viral hepatitis
    • differentiating factors
      • significantly elevated AST and ALT
  • positive hepatitis testing

Treatment

  • Conservative
    • cessation of alcohol
      • indication
        • all patients with alcoholic liver disease
        • associated with improved outcomes
    • nutritional therapy
      • indication
        • vitamin replacement
  • Medical
    • glucocorticoids
      • indication
        • severe alcoholic hepatitis
  • Surgical
    • liver transplantation
      • indication
  • in patients with decompensated liver disease

Complications

  • Gastroesophageal varices
    • secondary to portal hypertension
  • Hepatocellular cancer
  • Ascites
    • can result in spontaneous bacterial peritonitis