Canine ovarian epithelial tumours: histopathological and immunohistochemical evaluation with proposed histopathological classification system.

Canine ovarian epithelial tumours (OETs) are currently divided into ovarian adenomas and carcinomas, which are further inconsistently subclassified as papillary or cystic, whereas in human medicine, OETs are subdivided into several subtypes. This study aimed to establish clear morphological features enabling more consistent distinction between benign OETs and ovarian carcinomas (OvCas) as well as defining different histopathological patterns of canine OvCas. Analysis revealed a mitotic count threshold of >2 as a potential criterion for differentiating OvCas from benign OETs.

CD117 expression in canine ovarian tumours.

Canine ovarian cancer poses a significant diagnostic and therapeutic challenge. The heterogeneous nature of ovarian tumours makes accurate histological identification difficult, whilst treatment is limited to surgical excision. The tyrosine kinase receptor CD117 is neo-expressed in many tumours and represents a potential diagnostic and prognostic biomarker and therapeutic target.

The Influence of Mycotoxins on the Liver of Gilts and Their Suckling Piglets.

Mycotoxins are common fungal secondary metabolites in both animal feed and human food, representing widespread toxic contaminants that cause various adverse effects. Co-contamination with different mycotoxins is frequent; therefore, this study focused on feed contaminated with mycotoxins, namely, deoxynivalenol (5.08 mg/kg), zearalenone (0.

Sudden outbreak of metastatic intestinal adenocarcinoma in rainbow trout Oncorhynchus mykiss.

Intestinal adenocarcinomas are uncommon in fishes. To date, they have been reported in zebrafish Danio rerio, blue gularis Fundulopanchax sjostedti, koi carp Cyprinus carpio koi, Atlantic salmon Salmo salar and rainbow trout Oncorhynchus mykiss. Metastases are even rarer and have been observed so far at very low prevalence, only in feed-induced adenocarcinoma in Atlantic salmon and rainbow trout.

Hypertrophic Osteopathy Associated with Mycotic Pneumonia in a Roe Deer ( Capreolus capreolus).

Aspergillus fumigatus is one of the most common Aspergillus species causing disease in individual animals but it rarely affects deer species. We report a case of A. fumigatus infection causing mycotic pneumonia and hypertrophic osteopathy in a roe deer ( Capreolus capreolus).