CLINICAL COMMUNICATION KLINIESE MEDEDELING

 

Three cases of osteoma and an osseous fibroma of the paranasal sinuses of horses in South Africa

 

 

I Cilliers^I; J Williams^II; A Carstens^I; N M Duncan^II

^IDepartment of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110 South Africa
^IIDepartment of Pathology, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110 South Africa

 

 

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ABSTRACT

Four horses were presented to the Onderstepoort Veterinary Academic Hospital with histories of facial asymmetry, nasal discharge or obstruction of normal nasal passage airflow. Radiographic examination of the maxillary sinuses of 2 cases revealed well circumscribed, unilateral, mineralised masses; the other 2 cases showed less mineralisation. The masses were accessed for further investigation by surgically created frontonasal bone flaps or trephination of the maxillary sinuses. Diagnosis of osteoma was confirmed histopathologically in 3 of the cases and of ossifying fibroma in the 4th. Two horses were euthanased directly after surgical intervention due to poor prognosis. Osteomas are by nature expansile tumours andfollow the complex communication of the sinuses, and therefore are not all amenable to surgical removal. Osseous fibromas are large, solitary, expansile lesions that are rare in all species but reported most frequently in horses. They have an apparent predilection for the rostral mandible of the horse.

Key words: computed tomography, frontonasal bone flap, histopathology, horse, maxillary sinus, osteoma, osseous fibroma, ossifying fibroma, radiography, trephination

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REFERENCES

1. Baptiste K E 1996 Paranasal sinus osteoma in an American Miniature Horse: computed tomographic evaluation and surgical management. Equine Practice 9: 14-19        [ Links ]

2. Blackford J T G, Henry R W, Geiser D R, Held J P 1985 Triangulated flap technique for nasofrontal surgery results in five horses. Veterinary Surgery 4: 287-294        [ Links ]

3. Choi Y C, Jeon E J, Park Y S 2000 Ossifying fibroma arising in the right ethmoid sinus and nasal cavity. International Journal of Pediatric Otorhinolaryngology 2-3: 159-162        [ Links ]

4. Freeman D E 2003 Sinus disease. Veterinary Clinics of North America - Equine Practice 1: 209-243        [ Links ]

5. Freeman D E, Orsini P G, Ross M W, Madison J B 1990 A large frontonasal bone flap for sinus surgery in the horse. Veterinary Surgery 2: 122-130        [ Links ]

6. Head K W, Dixon P M 1999 Equine nasal and paranasal sinus tumours. Part 1: Review of the literature and tumour classification. Veterinary Journal 3: 261-278        [ Links ]

7. Kold S E, Ostblom L C, Philipsen H P 1982 Headshaking caused by a maxillary osteoma in a horse. Equine Veterinary Journal 2: 167-169        [ Links ]

8. Livesey M A, Keane D P, Sarmiento J 1984 Epistaxis in a standardbred weanling caused by fibrous dysplasia. Equine Veterinary Journal 2: 144-146        [ Links ]

9. McIlwraith C W, Robertson J T 1998 Paranasal sinus exploration. In McIlwraith C W (ed.) Mcllwraith and Turner's equine surgery advanced techniques (2nd edn). Williams and Wilkins, Baltimore: 270-275        [ Links ]

10. Morrow K L, Park R D, Spurgeon T L, Stashak T S, Arceneaux B 2000 Computed tomographic imaging of the equine head. Veterinary Radiology & Ultrasound 6: 491-497        [ Links ]

11. Morse C C, Saik J E, Richardson D W, Fetter A W 1988 Equine juvenile mandibular ossifying fibroma. Veterinary Pathology 6: 415-421        [ Links ]

12. O'Connor J P Lucey M P 1976 Osteoma in the maxillary sinus of a yearling Thoroughbred colt. Irish Veterinary Journal 30: 81-83.         [ Links ]

13. Orsini J A, Baird D K, Ruggles A J 2004 Radiotherapy of a recurrent ossifying fibroma in the paranasal sinuses of a horse. Journal of the American Veterinary Medical Association 9: 1483-1486        [ Links ]

14. Peterson F B, Martens R J, Montali R J 1978 Surgical treatment of an osteoma in the paranasal sinuses of a horse. Journal of Equine Medicine and Surgery 2: 279-283        [ Links ]

15. Puff C, Ohnesorge B, Wagels R, Baumgartner W 2006 An unusual mucinous osteoma with features of an ossifying fibroma in the nasal cavity of a horse. Journal of Comparative Pathology 1: 52-55        [ Links ]

16. Quinn G C, Kidd J A, Lane J G 2005 Modified frontonasal flap surgery in standing horses: surgical findings and outcomes of 60 cases. Equine Veterinary Journal 2: 138-142        [ Links ]

17. Robbins S C, Arighi M, Ottewell G 1996 The use of megavoltage radiation to treat juvenile mandibular ossifying fibroma in a horse. Canadian Veterinary Journal 11: 683-684        [ Links ]

18. Schumacher J, Dutton D M, Murphy D J, Hague B A, Taylor T S 2000 Paranasal sinus surgery through a frontonasal flap in sedated, standing horses. Veterinary Surgery 2: 173-177        [ Links ]

19. Schumacher J, Smith B L, Morgan S J 1988 Osteoma of paranasal sinuses of a horse. Journal of the American Veterinary Medical Association 10: 1449-1450        [ Links ]

20. Scotty N C, Ford M, Williams III F, Loiacono C, Johnson P J, Messer N T T, Turnquist S E, Essman S 2004 Exophthalmia associated with paranasal sinus osteoma in a Quarter-horse mare. Journal of Veterinary Diagnostic Investigation 2: 155-160        [ Links ]

21. Scutchfield W L, Schumacher J, Walker M, Crabill M 1994 Removal of an osteoma from the paranasal sinuses of a standing horse. Equine practice 9: 24-28        [ Links ]

22. Steinman A, Sutton G A, Lichawski D, Johnston D E 2002 Osteoma of paranasal sinuses in a horse with inspiratory dyspnoea. Australian Veterinary Journal 3: 140-142        [ Links ]

23. Thompson K G, Pool, R R 2002 Tumours of bone. In Meuten D J (ed.) Tumours in domestic animals (4th edn). Iowa State Press, Ames: 248-255        [ Links ]

24. Tremaine W H, Dixon P M 2001 A long-term study of 277 cases of equine sinonasal disease. Part 1: details of horses, historical, clinical and ancillary diagnostic findings. Equine Veterinary Journal 3: 274-282        [ Links ]

25. Tremaine W H, Dixon P M 2001 A long-term study of 277 cases of equine sinonasal disease. Part 2: treatments and results of treatments. Equine Veterinary Journal 3: 283-289        [ Links ]

26. Tremaine H F, Freeman D E 2007 Disorders of the paranasal sinuses. In McGorum B C, Dixon P M, Robinson N E, Schumacher J (eds) Equine respiratory medicine and surgery. Saunders Elsevier, Philadelphia: 403-404        [ Links ]

27. Trostle SS, Ratanen N, Anderson M, Taylor S, Vrono D S 2005 Juvenile mandibular ossifying fibroma in a 12-week-old foal. Equine Veterinary Education 17: 284-286        [ Links ]

28. Trotter G W 1993 Paranasal sinuses. Veterinary Clinics of North America -Equine Practice 1: 153-169        [ Links ]

 

 

Received: January 2008
Accepted: October 2008

 

 

* Author for correspondence. E-mail: ingrid.cilliers@up.ac.za