Mesenteric caseous lymphadenitis in a sheep; a case report and description diagnostic and treatment challenges
Subject Areas : Large Animal Diseases
Abolfazl Barzegar Bafrouei
1
*
,
Moosa Javdani
2
1 - Faculty of Veterinary/ Shahrekord University
2 - Faculty of veterinary/ shahrekord university
Keywords: Caseous lymphadenitis, mesenteric lymph node, abomasal ileus, sheep, Corynebacterium pseudotuberculosis,
Abstract :
Case Description- A three-year-old sheep with a history of weight loss, abdominal pain, fever, and diarrhea was referred to the large animals internal medicine department first and then to the department of veterinary surgery and radiology of Shahrekord University for final examination and radiography. Radiological evaluation revealed evidence of an external body in the cranial ruminal position. Clinical Findings- Following access to the rumen from the left flank, noticeable swelling of the mesenteric lymph node was observed, especially in the pylorus. With the removal and excision of the lymph node, there was a greenish white pus that confirmed the presence of cheese or caseus lymphadenitis in the case. Treatment and Outcome- After surgical treatment and removal of pus from mesenteric lymph node, penicillin (200 mg) and streptomycin (250 mg) (pen & strep), flunixin meglumine and oligovit were used to treat the patient. Clinical Relevance- Caseous lymphadenitis caused by Corynebacterium pseudotuberculosis and it is a zoonotic importance. it may on rare occasions cause regional lymphadenitis in humans, particularly in farm workers and meat inspectors. Several clinical forms of the disease caused by C. pseudotuberculosis have been described: pyogranulomatous reactions; abscess formation; ulcerative lymphangitis and mastitic and visceral forms. Complications of this disease include: mild to moderate degree degeneration in hepatocytes, enteritis, abomasal ileus, Mesenteric caseous lymphadenitis, damage to vagus nerve and Vagus indigestion. Biochemical characterization involved testing for catalase, oxidase, CAMP, nitrate reduction and urease production.