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Vet. Sci. 2018, 5(2), 46; https://doi.org/10.3390/vetsci5020046

Clinicopathological Diversity of Canine Mammary Gland Tumors in Sri Lanka: A One-Year Survey on Cases Presented to Two Veterinary Practices

1
School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand
2
Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya 20400, Sri Lanka
3
New Animal Clinic, 132/B, S. De. S. Jayasinghe Mawatha, Kohuwala, Nugegoda 10250, Sri Lanka
*
Author to whom correspondence should be addressed.
Received: 19 February 2018 / Revised: 23 April 2018 / Accepted: 24 April 2018 / Published: 27 April 2018
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Abstract

Mammary gland tumors (MGTs) are one of the most common neoplasms among dogs in Sri Lanka. However, the clinicopathological diversity of MGTs in Sri Lanka is largely unknown, impeding accurate diagnosis and effective treatment of the disease. The present study investigated the clinicopathological features of MGTs in 74 dogs presented to two veterinary practices in Sri Lanka treated surgically, over a one-year period. Information regarding the patient signalment, clinical presentation, and reproductive history were collected, and each neoplasm was examined histologically. Forty-one (54.4%) dogs were primarily presented for mammary neoplasia, while a MGT was an incidental finding in 33 (44.6%) dogs. The majority of tumors were histologically malignant (n = 65, 87.8%), and 18 malignant tumor sub-types were identified. A significantly higher proportion of malignant tumors were large (>3 cm diameter) and observed in inguinal mammary glands. Nulliparous (n = 42, 55.3%) dogs predominated in the group, and the mean age of MGT diagnosis was 8.0 ± 2.41 years. The present study identified tumor location and size to be predictive of malignancy. A high histological diversity of MGTs was observed. Overall, the present findings emphasize the necessity of improving awareness of MGTs among Sri Lankan clinicians as well as dog owners. View Full-Text
Keywords: canine; mammary gland tumors; malignant tumors; Sri Lanka canine; mammary gland tumors; malignant tumors; Sri Lanka
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Ariyarathna, H.; de Silva, N.; Aberdein, D.; Kodikara, D.; Jayasinghe, M.; Adikari, R.; Munday, J.S. Clinicopathological Diversity of Canine Mammary Gland Tumors in Sri Lanka: A One-Year Survey on Cases Presented to Two Veterinary Practices. Vet. Sci. 2018, 5, 46.

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