Radiographic findings in sheep with abomasal phytobezoariasis S.M., Azizi S., Torkamani D. (2016): Radiographic findings in sheep with abomasal phytobezoariasis. Veterinarni Medicina, 61: 436-442.
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The purpose of this study was to characterise the radiographic appearance of abomasal phytobezoars in sheep as well as to evaluate the utility of abdominal radiography to identify them. Twenty-seven fat-tailed Herrick sheep with a clinical suspicion of abomasal impaction were examined radiographically. Abdominal survey radiographs in right lateral recumbency were taken. Abomasal phytobezoars (AP) were seen in abdominal survey radiographs in 25/27 sheep (92%). Their radiographic survey appearance was round-to-oval masses with radiopaque margins and radiopacity similar to the ingesta centrally. An additional gastrographic barium study was performed in six of the sheep, followed by exploratory laparotomy where phytobezoars were removed through abomasotomy. The optimal time to visualise the APs was 48 h post-contrast. A significant correlation was noted between phytobezoars size in radiology and surgery (r = 0.651, P < 0.001). Use of the barium study can improve the phytobezoar-ingesta contrast and visibility of the phytobezoars. Plain radiography with sheep positioned in right lateral recumbency is a useful supplementary technique which can be used to evaluate abomasal phytobezoariasis. This study shows that radiography is a suitable diagnostic method for detecting the presence of, but not the number of, abomasal phytobezoars in sheep.

Anderson DE (2009): Trichobezoars. In: Andeson DE, Rings DM (eds): Current Veterinary Therapy: Food Animal Practice. 5th edn. Saunders Elsevier, St Louis. 116–117.
Azizi S, Farshid AA, Mardani K, Farzaneh H (2010): Sheep abomasal phytobezoariasis: the effect of breed, season and age with histopathological observations. International Journal of Veterinary Research 4, 95–99.
Bath GF, Bergh T (1979): A specific form of abomasal phytobezoars in goats and sheep. Journal of the South African Veterinary Association 50, 69–72.
Bath GF, Botha P, Vorster HJ, Cross RH (1992a): Physical structure and chemical composition of abomasal phytobezoars of goats and sheep. Journal of the South African Veterinary Association 63, 103–107.
Bath GF, Smith FJ, Vorster HJ, Cross RH (1992b): Experimental reproduction of phytobezoars. Journal of the South African Veterinary Association 63, 108–112.
Bath G.F., Wyk J.A. van, Pettey K.P. (2005): Control measures for some important and unusual goat diseases in southern Africa. Small Ruminant Research, 60, 127-140
Daniel WW (ed.) (1991): Biostatistics: A Foundation for Analysis in the Health Sciences. 5th edn. John Wiley and Sons, New York. 542–558.
Dyce KM, Sack WO, Wensing CJG (eds) (1996): Textbook of Veterinary Anatomy. 2nd edn. Saunders, Philadelphia. 688–689.
Gogoi SN, Pathak SC, Sharma HN (1976): Abomasal impaction in a Jersey calf (A clinical note). Indian Veterinary Journal 53, 70–71.
Haskell SRR (2004): Surgery of the sheep and goat digestive system. In: Fubini SL, Ducharme NG (eds): Farm Animal Surgery. 1st edn. Saunders Elsevier, Philadelphia. 521–526.
Hofmeyr CFB (1986): The digestive system. In: Oehme WF, Prier EJ (eds): Text Book of Large Animal Surgery. 3rd edn. Williams and Wilkins Company, Baltimore. 451–459.
Kealy JK, McAllister H, Graham JP (2011): Diagnostic Radiology and Ultrasonography of the Dog and Cat. Elsevier Saunders, Philadelphia. 83 p.
Kline E., Meyer J., Nelson D., Memon M. (1983): Abomasal impaction in sheep. Veterinary Record, 113, 177-179
Orsini JA, Dikes N, Ruggles A, Charlton C, Perry R (1991): Use of gastrotomy to relieve esophageal obstruction in a horse. Journal of the American Veterinary Medical Association 198, 295–296.
Radostits OM, Gay CC, Hinchcliff KW, Constable PD (2007): Veterinary Medicine: A Textbook of the Diseases of Cattle, Horses, Sheep, Pigs and Goats. Saunders, New York. 369–370.
Sharma Sandeep K., Singh Ambika P., Tayal Rishi, Chandna Inder S. (1984): CONTRAST RADIOGRAPHY OF THE OVINE GASTROINTESTINAL TRACT. Veterinary Radiology, 25, 17-22
Sargison N., Scott P., Dun K. (1995): Intestinal obstruction in a blue-faced Leicester ram associated with a phytobezoar lodged at the pelvic inlet. Veterinary Record, 137, 222-222
Sullivan Eileen K., Callan Robert J., Holt Timothy N., Metre David C. (2005): Trichophytobezoar Duodenal Obstruction in New World Camelids. Veterinary Surgery, 34, 524-529
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