Ectopic fascioliasis mimicking a colon tumor

Area of Science:

• Veterinary Medicine
• Parasitology
• Gastroenterology

Background:

• Fasciola hepatica is a trematode parasite affecting livestock and humans, typically causing liver disease (fascioliasis).
• Infection occurs through ingestion of contaminated water or aquatic plants containing parasite metacercariae.
• Clinical signs of fascioliasis are diverse, often involving hepatobiliary symptoms, necessitating a high index of suspicion.

Observation:

• Extrabiliary manifestations of fascioliasis are uncommon but documented in various organs.
• Reported extrahepatic sites include subcutaneous tissue, brain, lungs, and reproductive organs.
• This case presents a unique instance of fasciola infection localized to the colon.

Findings:

• The study documents a rare case of colonic fascioliasis, an unusual site for Fasciola hepatica.
• This finding expands the known spectrum of extrabiliary fascioliasis.
• Microscopic examination confirmed the presence of the parasite within the colonic tissue.

Implications:

• Recognizing colonic fascioliasis is crucial for accurate diagnosis and effective treatment of fascioliasis.
• This case underscores the importance of considering parasitic infections in unexplained gastrointestinal symptoms.
• Further research into the mechanisms and prevalence of extrabiliary fascioliasis is warranted.