Spontaneous bacterial peritonitis in extrahepatic portal venous obstruction

Area of Science:

• Gastroenterology and Hepatology
• Infectious Diseases

Background:

• Spontaneous bacterial peritonitis (SBP) is an infection of ascitic fluid, typically seen in patients with cirrhosis.
• Extrahepatic portal venous obstruction (EHPVO) is a condition characterized by blockage of the portal vein outside the liver, often leading to ascites.
• SBP is considered extremely uncommon in patients with EHPVO due to factors like lower ascites incidence and intact hepatic function.

Observation:

• This study presents two distinct cases of patients with EHPVO who developed spontaneous bacterial peritonitis.
• These cases highlight a deviation from the generally accepted low incidence of SBP in the context of EHPVO.

Findings:

• The occurrence of SBP in these two EHPVO patients suggests that the condition, while rare, can indeed complicate EHPVO.
• The findings prompt a re-evaluation of the protective factors previously thought to prevent SBP in EHPVO.

Implications:

• These cases underscore the importance of considering SBP in the differential diagnosis of ascites infection in EHPVO patients.
• Further research may be needed to fully understand the mechanisms and risk factors for SBP in EHPVO.
• Clinical vigilance for SBP is warranted even in patients with EHPVO, despite its perceived rarity.