Tehran University of Medical Sciences Iranian Journal of Parasitology 1735-7020 10 2 2015 06 15 301 305 EN Evi Ioannidou Clinic of Farm Animals, School of Health Sciences, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Greece. Dimitra Psalla Laboratory of Pathology, School of Health Sciences, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Greece. Elias Papadopoulos Laboratory of Parasitology and Parasitic Diseases, School of Health Sciences, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Greece. Anastasia Diakou Laboratory of Parasitology and Parasitic Diseases, School of Health Sciences, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Greece. Vasiliki Papanikolopoulou Clinic of Farm Animals, School of Health Sciences, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Greece. Harilaos Karatzias Clinic of Farm Animals, School of Health Sciences, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Greece. Zoe S Polizopoulou Laboratory of Clinical Diagnosis, School of Health Sciences, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Greece. Nektarios D Giadinis Clinic of Farm Animals, School of Health Sciences, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Greece. 2015 10 14   Coenurosis is a disease of the central nervous system in sheep, caused by Coenurus cerebralis, the larval stage of Multiceps multiceps, which inhabits the small intestine of Canidae. A case of regurgitations in a 2.5 month old lamb with acute coenurosis is being reported. The lamb was presented with a sudden onset of ataxia and re-gurgitations for 10 days. The post-mortem examination revealed 4 immature C. cerebralis cysts between 0.5 and 1.5 cm in diameter located in the brainstem and cerebellum, and histopathological examination revealed multifocal pyogranuloma-tous meningoencephalitis, so a diagnosis of acute coenurosis was established. Thus, acute coenurosis should be included in the differential diagnosis of regurgi-tations in lambs. https://ijpa.tums.ac.ir/index.php/ijpa/article/view/318 https://ijpa.tums.ac.ir/index.php/ijpa/article/download/318/494