Computed tomographic findings and clinical features in dogs with canine cutaneous lymphoma: 10 cases (2007-2018)

Watton, TC; Purzycka, K; Fitzgerald, E

Abstract

OBJECTIVE To report clinical features, CT findings, treatment protocols, and outcomes for dogs in which canine cutaneous lymphoma (CCL) was diagnosed. ANIMALS 10 client -owned dogs with CCL. PROCEDURES Medical records of dogs in which a diagnosis of CCL had been made between September 2007 and July 2018 and in which CT had been performed prior to treatment were reviewed. All available CT studies were reviewed, and an anatomical reference system was developed to map observed lesions. Treatment protocols and patient outcomes were summarized. RESULTS 14 CT examinations were performed on the 10 dogs, and 9 dogs had lesions consistent with CCL on CT images. Nodular lesions were present in 8 dogs, and cutaneous or subcutaneous mass lesions were seen in 3. Well-defined, diffusely distributed, contrast -enhancing, cutaneous or subcutaneous nodules were most common; mass lesions were more variable in appearance. Nine dogs had lymphadenopathy, with the mandibular and axillary lymph nodes most commonly affected. Four dogs had confirmed nodal involvement, and 4 had confirmed visceral involvement. Nine dogs received treatment with chemotherapy, and 5 had a complete response. CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that dogs with CCL may have a wide spectrum of CT findings. Many of these lesions, including affected lymph nodes, would be unlikely to be detected clinically, suggesting that CT may be a useful modality to assess the severity of disease and for guiding selection of local versus systemic treatment.

Citation

Watton, T., Purzycka, K., & Fitzgerald, E. (2021). Computed tomographic findings and clinical features in dogs with canine cutaneous lymphoma: 10 cases (2007-2018). Journal of the American Veterinary Medical Association, 259(12), 1433-1440. https://doi.org/10.2460/javma.20.11.0635

• Journal Article Type: Article
• Acceptance Date: Dec 1, 2021
• Online Publication Date: Dec 15, 2021
• Publication Date: 2021
• Deposit Date: Jul 26, 2023
• Publicly Available Date: Jul 26, 2023
• Print ISSN: 0003-1488
• Publisher: American Veterinary Medical Association (AVMA)
• Peer Reviewed: Peer Reviewed
• Volume: 259
• Issue: 12
• Pages: 1433-1440
• DOI: https://doi.org/10.2460/javma.20.11.0635
• Keywords: T-CELL LYMPHOMA; CT; DIAGNOSIS; SKIN; GUIDELINES; NEOPLASIA