Ocorrência e aspectos macro e microscópicos da mucometra em cadelas

The mucometra is a non-inflammatory change that affects the uterus through the accumulation of sterile fluid in the uterine lumen. This study aimed to report the occurrence of mucometra in bitches, as well as describe their macroscopic and microscopic aspects. Were used 100 uterus of bitches coming from ovariohysterectomy (OHE) of convenience. The pieces were fixed whole in 10% buffered formaldehyde for 48 hours. Subsequently, samples 3-5 mm thickness of the uterine horns were selected, followed by routine histology, with slides stained with hematoxylin and eosin. The animals in this study were classified according to age, the number of births and the use of contraceptives. Data were statistically analyzed using descriptive and chi-square analysis with level of significance of 5%. The mucometra was observed in 9% (9/100) of uteri examined. Bitches over six months and less than or equal to three years (66.67%), nulliparous (88.89%) and who used contraceptives (66.67%) were the most affected by mucometra. Grossly, the uterus showed variable distension of the horns, giving irregularity to the organ. When cut, it was observed the presence of mucous or fluid and light gray color. Histopathology, the perimetrium and myometrium were normal. In some cases, the endometrium was atrophied and in all cases the endometrial glands were distended and many cystic, either with or without hyperplasia of the epithelium. In the glandular lumen was observed homogeneous material and basophilic squamous cells. We concluded that the mucometra is a pathological change with low incidence in female dogs, which causes irregularity in the uterine lining and destruction of the endometrial mucosa.