Retrospective study of 155 cases of prolapse of the nictitating membrane gland in dogs

Abstract

A retrospective study of 155 cases (114 dogs). The breed, sex and age at the time of the first and opposite onset of nictitans gland prolapse were recorded. Long-term follow-up with a minimum of one-year duration was performed by telephone conversations. One hundred and fourteen dogs representing 155 nictitans gland prolapses were included. 75.4 per cent of the first prolapse occur before one year of age. Unilateral nictitans gland prolapse was observed in 64 per cent of cases. When the condition was bilateral, it occurred simultaneously in 41.4 per cent. When it was bilateral but not simultaneous (24/41), the opposite gland prolapse occurred within three months in 70.8 per cent of the cases. Five breeds were most commonly affected by the bilateral condition: French bulldog, shar pei, great dane, English bulldog and cane corso.

Estudo Retrospectivo De 71 Casos De Protrusão Da Glândula Da Terceira Pálpebra (2009-2013)

“…Segundo a literatura, a porcentagem média de animais com protrusão unilateral variou de 64 a 81% (GALLEGO-MEJÍA et al, 2010;DEHGHAN et al, 2012;MAZZUCCHELLI et al, 2012;PEIXOTO;GALERA, 2012;SCALZILLI;BAU-MWORCEL;SOARES, 2014), estando a porcentagem deste trabalho similar aos descritos anteriormente.…”

“…As raças mais acometidas pela protrusão da glân-dula da terceira pálpebra foram Lhasa Apso (24%, 17/71), SRD (20%,14/71) (DEHGHAN et al, 2012;MAZZUCCHELLI et al, 2012;PEIXOTO;GA-LERA, 2012;SCALZILLI;BAUMWORCEL;SOARES, 2014). Entretanto, não foi observada correlação significativa entre a raça e a lateralidade da afecção (rs = -0,20; p = 0,08), não havendo, dessa forma, maior tendência à protrusão unilateral ou bilateral de acordo com as raças.…”

“…Acomete principalmente animais jovens, sendo descritas como as principais raças acometidas: Beagle, Shih-Tzu, Mastin Napolitano (PEIXOTO; GALE-RA 2012), Lhasa Apso, Cocker Spaniel Americano, Bulldog Francês, Bulldog Inglês e Cane Corso (MAZZUCCHELLI et al, 2012). A etiologia desta afecção ainda não é bem definida, porém há suspeita de que seja decorrente de uma deformidade/frouxidão no retináculo, que é responsável por unir a glândula à periórbita (SLATTER, 2005;HENDRIX, 2007).…”

Repairing nictitans gland prolapse in dogs

“…The exact cause of this condition is still unknown, but it may be the result of aplasia or hypoplasia of the connective tissue attachments between the base of the gland and the periorbital tissues (Plummer and others 2008), which can be brought on by lymphoid hyperplasia and allergic inflammation of the gland (Mazzucchelli and others 2012). The abnormality is usually unilateral (60 per cent) at first but may become bilateral, typically within three months (Mazzucchelli and others 2012).…”

“…The abnormality is usually unilateral (60 per cent) at first but may become bilateral, typically within three months (Mazzucchelli and others 2012).…”