OMIA 001693-9913 : Lacrimal fistula in Bos taurus
Mendelian trait/disorder: unknown Considered a defect: yes Cross-species summary: Also known as nasolacrimal duct fistula. Inheritance: With the incidence of this disorder differing substantially in the offspring of three Brown Swiss bulls, Braun et al. (2014) suggested "a hereditary cause of nasolacrimal duct fistula in Brown Swiss cattle". Clinical features: From a survey of 265 Brown Swiss cattle, Braun et al. (2014) reported: "The fistulae were located medial to the medial canthus of the eye and were 1 to 10 mm (median, 1 mm) in height and 1 to 12 mm (median, 2 mm) in length. The shape of the opening was circular in 58, oval in 23 and slit-like in three. One other animal had a large opening with an atypical shape and another had an abnormal medial canthus with several fistulous openings. Seventy openings were pigmented and 52 were hairless. The fistulae were clinically significant in 12 animals." Prevalence: As reported by Braun et al. (2014): "Of 265 [Brown Swiss] cattle examined, 54 had unilateral (n = 24) or bilateral fistula (n = 30)." Breed: Brown Swiss.
Note: the references are listed in reverse chronological order (from the most recent year to the earliest year), and alphabetically by first author within a year.
|2014||Braun, U., Jacober, S., Drögemüller, C. :|
|Congenital nasolacrimal duct fistula in Brown Swiss cattle. BMC Vet Res 10:44, 2014. Pubmed reference: 24548799. DOI: 10.1186/1746-6148-10-44.|
|2012||Braun, U., Spiess, B., Matheis, F., Schnetzler, C., Trösch, L., Drögemüller, C., Gerspach, C. :|
|Bilateral congenital lacrimal fistula in a Brown Swiss bull. Schweiz Arch Tierheilkd 154:121-3, 2012. Pubmed reference: 22378053. DOI: 10.1024/0036-7281/a000310.|
|1985||McLaughlin, S.A., Brightman, A.H., Nelson, D.R. :|
|Nasolacrimal duct anomaly in a Holstein calf. Agri-Practice 6:30-31, 1985.|
|1975||Heider, L., Wyman, M., Burt, J., Root, C., Gardner, H. :|
|Nasolacrimal duct anomaly in calves. J Am Vet Med Assoc 167:145-7, 1975. Pubmed reference: 1150505.|
- Created by Frank Nicholas on 29 Jun 2012
- Changed by Frank Nicholas on 29 Jun 2012
- Changed by Frank Nicholas on 26 Feb 2014