Abstract
This work reports the clinical, laboratorial and pathological findings of colon impaction in a 3½-year-old female crossbred cow (3/4 Holstein x ¼ Gir) weighing 400kg. Clinical examination revealed apathy, tachycardia and 10% of dehydration. There was a reduction on appetite as well as ruminal and intestinal motility. Simultaneous auscultation and percussion showed a well-defined metallic area, or ping, in the 11th intercostal space. Rectal examination detected scant, pasty, blackish and fetid feces, as well as a hard, spherical structure that had adhered to the upper right abdominal cavity of the large intestine, not allowing its total palpation. Hematology diagnosed leukocytosis with neutrophilia and hyperfibrinogenemia. Increased chloride ion concentration (42,42 mEq/L) was evidenced by rumen fluid analysis. Right flank celiotomy followed by exploratory laparotomy was performed revealing colon impaction and diffuse peritonitis. Necropsy findings indicated an ovoid solid mass in the spiral valve of the ascendant colon. It was adhered to the peritoneal wall, partially covered by fibrin, and displayed focal hemorrhage areas that extended into the greater omentum. During the opening of the colonic region, mild stenosis and fecaloma obstruction were observed due to mucosal necrosis and ulceration.
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