NAVLE® Question of the day

MO TU WED TH FR
January 8, 2025
NAVLE

A client with a small backyard flock presents a chicken carcass for necropsy. She says the bird had lost significant weight, was slow to move around, and was limping.

Necropsy reveals various-sized granulomatous lesions distributed throughout the spleen, liver, intestines, and bone marrow, as seen below.

What is the presumptive diagnosis?