What organism is indicated by coughing in a cat along with the presence of eggs approximately 80 um in size?

The indication of coughing in a cat, along with the presence of eggs approximately 80 micrometers in size, aligns with the characteristics of Paragonimus, a trematode or fluke. Paragonimus species typically infect the lungs and are known to cause respiratory symptoms in infected animals. The egg size you mentioned is consistent with those produced by Paragonimus, as their eggs tend to be relatively large and operculated.

Paragonimus is often found in the lungs of felids, and the presence of coughing suggests a respiratory involvement, which is a common clinical sign associated with this parasitic infection. The size of the eggs being around 80 micrometers further supports the identification of this organism, as it corresponds to the dimensions typically observed in Paragonimus eggs.

This connectivity between the clinical signs (coughing) and the specific egg characteristics is critical for accurate diagnosis and understanding of the pathogen involved in the case presented.