Consecutive extrapulmonary paragonimiasis involving liver and colon

摘要

Paragonimiasis is a foodborne tissue-invasive parasitic infection caused by Paragonimus westermani. The infection is closely related to eating habits, and in humans it results from eating freshwater crayfish or crabs, secondary intermediate hosts or the flesh of wild boar, the paratenic host contaminated with the metacercariae of paragonimus. Although paragonimiasis is primarily a pulmonary disease, ectopic infection can occur in unexpected sites because of the complexity of the migration route of Paragonimus in the definitive hosts. Cutaneous or cerebral paragonimiasis are the known forms of ectopic infestation of paragonimiasis, but hepatic paragonimiasis is rare. Furthermore, consecutive and multiple ectopic organ involvement in paragonimiasis is very rare, especially in the liver and colon. Here, we report a case of consecutive extrapulmonary paragonimiasis involving the liver and colon.