Veterinary researchers from Cambridgeshire, UK have reported a case of extra-intestinal Blastocystis infection observed in a duck. Although Blastocystis is often thought to occur exclusively in the gastrointestinal tract, samples taken from a facial swelling of the duck in question were found ro bear a morphological similarity to Blastocystis. Subsequent PCR testing showed that the subtype was consistent with Blastocystis sp. subtype 7. The full study was published in the Journal of Veterinary Diagnostic Investigation.