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[Structure and topography of the pelvic lymph nodes in female dogs].

In 243 mongrel female dogs anatomy, topography of the pelvic lymph nodes (LN), composition and frequency of their revealing have been studied. By means of roentgenological and morphological methods in 100% of cases, lateral, iliac and hypogastric LN are revealed. In 94% sacral and in 87.3% medial iliac left, as well as anorectal LN (88.6%) are detected most often. Obturative (20.4%--left and 27.3%--right), subpiriform (15.3%), suprapiriform (3.3%) and lumbar caudal (8%) LN occur less often. Inconstantly LN are predominantly revealed in the left side. When the constant LN are of small size, medial iliac, sacral and anorectal nodes are always discovered. In this case anorectal and lumbar caudal LN are revealed without obturative ones, and the latter--without medial iliac, which in their turn are found without sacral LN. Volumetric values of the constant and inconstant LN are in direct dependence with each other. When the volume of the constant LN increases, the volume of the inconstant LN also increased, demonstrating a definite tendency to decreasing amount of the latter. Caudal lumbar LN are revealed in 8% (12 cases in 150), therefore, peripheral lymph with a dye, and to the same extent an ascending infection and cells of malignant neoplasms directly get into the lymphatic lumbar trunk.