Question

An increased amount of fecal fat is most directly associated with :

• A. Meningitis
• B. Hematuria
• C. Steatorrhea
• D. Diabetes insipidus

Answer 1

Answer:

C. Steatorrhea

Steatorrhea

• Definition: The presence of excess fat in feces is clinically known as Steatorrhea.
• Physiological Cause: It typically results from the malabsorption of dietary lipids, often due to deficiencies in bile salts, pancreatic enzymes (lipase), or issues with the intestinal mucosa.
• Pancreatic Insufficiency: The most direct and common cause involves the inability of the pancreas to secrete adequate amounts of digestive enzymes like pancreatic lipase, which is essential for breaking down triglycerides into absorbable monoglycerides and free fatty acids.
• Bile Acid Deficiency: Bile, produced by the liver and stored in the gallbladder, emulsifies fats. A lack of bile salts (often due to liver disease or bile duct obstruction) prevents proper emulsification, leading to fat malabsorption.
• Mucosal Disorders: Conditions affecting the small intestine lining, such as Celiac disease, Crohn's disease, or Tropical sprue, damage the surface area required for lipid absorption.
• Diagnostic Indicators: Steatorrhea is characterized by stools that are typically bulky, foul-smelling, pale, and often float due to high gas content and lipid density.
• Clinical Test: The Sudan III stain is a standard laboratory test used to detect fat droplets in stool samples to confirm the diagnosis of malabsorption.