Factors associated with survival, laminitis and insulin dysregulation in horses diagnosed with equine pituitary pars intermedia dysfunction.

Background: Pituitary pars intermedia dysfunction (PPID) is a commonly described endocrine disorder in higher latitudes of the Northern hemisphere but the description of the disease at lower latitudes and in the Southern hemisphere is limited.

Objectives: Document the clinical features of PPID at different Australian latitudes and climates, and investigate factors associated with survival, laminitis and insulin dysregulation (ID).

Study Design: Retrospective study of 274 equids from eight institutions across Australia.

Angiolymphoid hyperplasia with eosinophils in oral mucosa.

Angiolymphoid hyperplasia with eosinophils is a rare, benign angioproliferative lesion with a predilection for the facial skin. A unique instance of the lesion in oral mucosa is described, and the classification, differential diagnosis, and pathogenesis of the lesion are reviewed.

Wegener's granulomatosis: a case with primary mucocutaneous lesions.

A case of Wegener's granulomatosis is recorded in which the first signs were skin ulceration, segmental gingivitis, and oro-antral fistula. Diagnosis, management, and the significance of the microscopic appearances are discussed.