Pulse granulomas (PG) are reactions to particles of food that are characterized by clusters of small
to medium-sized hyaline rings. This report describes a case of multiple pulse granulomas, found
adhering to the visceral and parietal peritoneum of the abdominal wall of a wild rainbow trout. This
was associated with fistulae, involving the gastrointestinal tract, resulting from deep penetration
of acanthocephalans into the intestinal wall
