Eosinophilic cystitis caused by vesical sparganosis: a case report

Area of Science:

• Parasitology
• Urology
• Pathology

Background:

• Eosinophilic cystitis is a rare condition characterized by eosinophilic infiltration of the bladder wall.
• Vesical sparganosis, a parasitic infection of the bladder, is uncommon but should be considered in endemic areas.

Observation:

• A patient presented with bladder mass, peripheral eosinophilia, and elevated anti-sparganum antibodies.
• The patient reported a history of consuming raw frog meat.

Findings:

• Pathological examination revealed characteristic worm tracks (sinuous necrosis) and extensive eosinophilic infiltration in the bladder wall.
• Surgical resection of the parasitic lesion led to a decrease in serum sparganum-specific antibody titers.

Implications:

• This case highlights the importance of considering parasitic infections, such as sparganosis, in the differential diagnosis of eosinophilic cystitis.
• A history of raw meat consumption in endemic regions is a critical factor in suspecting parasitic etiology.