Dear All, Attached is the *Question Sheet *for Diagnostic Exercise #*2**73, * contributed by Tatiana Paz1, Eileen Henderson2, Javier Asín2 and Francisco A. Uzal2. 1Veterinary Microbiology and Molecular Biology Laboratory, Veterinary Medicine Faculty, Federal University of Mato Grosso, MT, Brazil. 2California Animal Health and Food Safety Laboratory System, San Bernardino Branch, School of Veterinary Medicine, University of California-Davis, San Bernardino, CA, USA. Corresponding author: tpazc@unal.edu.co The Diagnostic Exercises are an initiative of the Latin Comparative Pathology Group (LCPG), the Latin American subdivision of The Davis-Thompson Foundation. Members and non-members from any country of residence may contribute to these exercises. Please consider contributing a case to this initiative. It does not have to be unusual, and all pathology sub-specialties are welcome! Please consult instructions on how to format and submit your DE at https://davisthompsonfoundation.org/diagnostic-exercises-instructions/ Previous cases are available at https://davisthompsonfoundation.org/diagnostic-exercise/