Endogenous lipoid pneumonia associated with pulmonary neoplasia in three dogs

Endogenous lipoid pneumonia is a poorly characterized condition in veterinary medicine and there are very few reports describing this pathology, particularly in canine patients. However, it is a well-recognized pathology associated to lung neoplasia in humans. This case series describes three unique cases of endogenous lipoid pneumonia associated to lung neoplasia. The clinical, imaging, cytological findings and the outcome are described in dogs for the first time. Clinical presentation and imaging lesions can appear non-specific, and may be obscured by the presence of the neoplastic infiltrate. In order to diagnose this condition, cytology or histopathology is required. Awareness of the existence of endogenous lipoid pneumonia in dogs with pulmonary neoplasia can be crucial. It could have an impact in the staging and monitoring of these patients, in terms of their clinical signs and quality of life, alongside guiding the appropriate use of antimicrobials