The parotid duct has been reported to be the most common site of sialoliths in horses. In this case report, we described the first confirmed case of the equine sialolithiasis in Slovakia. The work was aimed to describe the transcutaneous approach to removing the sialolith, which manifested as a hard painless mass in the area of the maxillary cheek teeth, in a 14-year-old Slovakian warmblood mare. Pathological-anatomical and histological examination after extirpation confirmed the presence of parotid duct ectasia resulting from calculus. The mineral composition of the sialolith was determined with atomic absorption spectroscopy using X-ray powder diffraction. The sialolith was successfully extirpated transcutaneously, without complications or recurrence.

Department of Animal Nutrition and Husbandry University of Veterinary Medicine and Pharmacy in Košice Komenského 73 Košice 041 81 Slovak Republic

Department of Geological Sciences Faculty of Science Masaryk University Kotlářská 267 2 Brno 611 37 Czech Republic

Department of Morphological Disciplines University of Veterinary Medicine and Pharmacy in Košice Komenského 73 Košice 041 81 Slovak Republic

Equine Clinic University Veterinary Hospital University of Veterinary Medicine and Pharmacy in Košice Komenského 73 Košice 041 81 Slovak Republic

Institute of Geosciences Faculty of Mining Ecology Process Control and Geotechnologies Technical University of Košice Park Komenského 15 Košice 040 01 Slovak Republic

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