Canine cutaneous histiocytoma: cytological characteristics - retrospective study of cases diagnosed at the Department of Veterinary Pathology 2009 – 2018

Pseći kutani histiocitom tumor je okruglih stanica. Najčešće se pojavljuje kod mladih pasa. Citološka pretraga često je dostatna za postavljanje konačne dijagnoze. Cilj ovog rada bio je naglasiti važnost uzimanja uzoraka za citološku pretragu, bolje razumijevanje citoloških karakteristika psećeg kutanog histiocitoma te povezanost upalnih stanica s regresijom tumora. Citološka pretraga vrlo je važna metoda u dijagnostici psećeg kutanog histiocitoma zbog točnosti, brzine, jednostavnosti i prihvatljive cijene. Ovo je istraživanje provedeno na 20 citoloških preparata iz arhive Zavoda za veterinarsku patologiju Veterinarskog fakulteta Sveučilišta u Zagrebu. Mikroskopskom pretragom ponovno su pregledani preparati i određene citološke karakteristike koje uključuju staničnost, omjer jezgre i citoplazme, prisutnost anizocitoze i anizokarioze, infiltraciju limfocita i neutrofila te prisutnost nekrotičnog debrisa.Canine cutaneous histiocytoma is a round cell tumor that most commonly occurs in young dogs. Cytological examination alone is often sufficient to make a definitive diagnosis. The aim of this study was to emphasize the importance of sampling for cytological examination, a better understanding of the cytological characteristics of canine cutaneous histiocytoma, and the association of inflammatory cells with tumor regression. A cytological examination is a very valuable method in the diagnosis of canine cutaneous histiocytoma because of its accuracy, speed, simplicity and reasonable price. This research was performed on 20 cytological preparations from the archive of the Department of Veterinary Pathology, Faculty of Veterinary Medicine, University of Zagreb. The samples were microscopically reevaluated. At the same time the following cytological characteristics were determinated: cellularity, nucleus to cytoplasm ratio, presence of anisocytosis and anisokaryosis, infiltration of lymphocytes and neutrophils, and presence of necrotic debris