Tumors of the Mammary Gland

Influence of Surgical Technique on Overall Survival, Disease Free Interval and New Lesion Development Interval in Dogs with Mammary Tumors

“…In this study, malignant neoplasm frequency of 56% was superior to the 50% ratio reported by Sorenmo (2003) [4] and Sorenmo et al (2013) [5]. However, De Nardi et al (2002) [19] and Filho et al (2010) [23], reported malignancy ratios of 68.4% and 73.3%, respectively.…”

“…The removal of mammary tumors was performed through the simplest and less invasive surgical procedure necessary to the complete removal of all tumors and main known lymphatic connections between affected glands, as suggested by Brodey et al (1983) [16] and Sorenmo et al (2013) [5]. It was not possible to separate the surgical technique used from the type and stage of disease, once the surgical technique was chosen according to number of lesions and site, respecting lymphatic drainage and established prognostic factors such as lesions size and existence of skin or muscular adherences.…”

“…Aggressive surgical procedures for the treatment of localized lesions may reduce the risk of developing new lesions in a small number of dogs, especially in young intact bitches [5]. Stratmann et al (2008) [2] also indicated radical mastectomy as the best surgical option, regardless of the number and the size of lesions.…”

“…Axillary lymph nodes are rarely related to mammary cancer in the dog and must be removed with caution, in selected cases. The inguinal lymph node, which is intimately associated with the ipsilateral inguinal gland, should be removed whenever this gland is surgically removed [5]. Connections between glands on different sides and between other mammary glands are rare, but may exist [7].…”

“…Many surgical techniques may be used for the treatment of canine mammary tumors [5] [9] and similar to Medicine [10] [11]. The advantages and disadvantages of each procedure have been extensively discussed [12].…”