Dear All, Attached is the *Question Sheet *for Diagnostic Exercise #*268 *contributed by Adriana L. Stigger*1, Saulo P. Pavarini2, Irene Guterra1, Francine F. Pereira1, Milena Carolina Paz2, Emanoelly M. S. da Silva2, Claudio S.L. Barros3, Daniel R. Rissi4 1Laboratory of Veterinary Pathology, Centro Universitário da Região da Campanha (Urcamp), Alegrete, RS, Brazil 2Setor de Patologia Veterinária, Faculdade de Medicina Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil. 3Laboratory of Anatomic Pathology, School of Veterinary Medicine and Animal Sciences, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil. 4Athens Veterinary Diagnostic Laboratory, Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens GA, USA 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/