January 2006

Labrador Retriever Dog: Nasal Parakeratosis

This disease has been seen exclusively in Labrador Retrievers or their crossbreds. All colour types are affected and develop lesions around 6 months to 1 year of age. Affected dogs develop dry, rough, proliferative, adherent keratinous debris on their planum nasale. Histological features include moderate to severe epidermal and infundibular follicular acanthosis and severe parakeratosis. Fissuring can occur and lead to secondary inflammation or bacterial infection.

february 2006

Pigeon: Herpes Inclusion Body Hepatitis

Pigeon herpesvirus was first reported in 1945 and has been found throughout the world. A varied pathology is incountered in systemic infections but classically hepatic necrosis with few or many intranuclear basophilic and eosinophilic inclusion bodies is observed. Pharyngeal and salivary tissues are also involved.

march 2006

Canine Uterus: Subinvolution of placental sites

This is seen in young dogs often after the first litter. There is a persistent vaginal discharge post-whelping. Usually it is odourless and minimally serosanguinous. The condition generally resolves spontaneously within 2 to 6 months. Grossly there are fusiform thickenings of the uterine horns at the sites of previous placental attachment. Histologically masses of congested and haemorrhagic tissue project into the uterine lumen. The stroma contains numerous syncytial cells and areas of mineralisation with variable numbers of mixed inflammatory cells.