Correspondence analysis of the pattern of association between breed, morphological type and tissue of origin, in relation to canine mammary tumors: (a) small-sized, (b) medium-sized, and (c) large-sized female dogs diagnosed with malignant neoplasm.

<p>The association between variables is interpreted according to the distance that separates the adjacent categories of each variable. Thus, the lesser the distance, the greater the correspondence or association between groups of variables. Dim 1 and Dim 2 were defined as the main variance components within the multivariate analysis, accounting for 89–93% of the explanation of the total variation exhibited by the data.</p

Relative incidence of mammary gland lesions according to biological behavior.

<p>Relative incidence of mammary gland lesions according to biological behavior.</p

Gaussian-fitted annual cumulative frequency of mammary tumors.

<p>BN: Benign tumor; MN: Malignant tumor.</p

Annual incidence of canine biopsies registered at the Department of Pathology, FMVZ-UNAM (2002–2012).

<p>Annual incidence of canine biopsies registered at the Department of Pathology, FMVZ-UNAM (2002–2012).</p

Age group distribution. Female dogs diagnosed with mammary lesions classified according to their size.

<p>Age group distribution. Female dogs diagnosed with mammary lesions classified according to their size.</p

Annual frequency of canine mammary tumors according to the tissue of origin (2002–2012).

<p>^a,b,c For benign or malignant neoplasm, uncommon superscript between tissue origin indicates differences at <i>p</i> < 0.001.</p><p>Annual frequency of canine mammary tumors according to the tissue of origin (2002–2012).</p

Times series showing the annual frequency allocation of the main morphological types: (a) benign and (b) MN in the epidemiological curves, formed with the 25^th, 50^th and 75^th percentiles for the total frequency of mammary lesions.

<p>Times series showing the annual frequency allocation of the main morphological types: (a) benign and (b) MN in the epidemiological curves, formed with the 25^th, 50^th and 75^th percentiles for the total frequency of mammary lesions.</p

Time series of the number of benign or malignant cases of canine mammary tumors classified according to the tissue of origin: (a) Epithelial, (b) Mesenchymal or (c) Mixed tumor.

<p>Time series of the number of benign or malignant cases of canine mammary tumors classified according to the tissue of origin: (a) Epithelial, (b) Mesenchymal or (c) Mixed tumor.</p

Relative frequency of benign or malignant canine mammary tumors according to the tissue of origin.

<p>Relative frequency of benign or malignant canine mammary tumors according to the tissue of origin.</p

Age group distribution. Female dogs diagnosed with benign or malignant neoplasm.

<p>Age group distribution. Female dogs diagnosed with benign or malignant neoplasm.</p