Reynolds D, Fransson B, Preston C. Debbie Reynolds, BVSC, Michigan State University, Veterinary Clinical Sciences, Corner of Wilson and Bogue, East Lansing, MI 48824, United States, Phone: +1 226 929 2526, E-mail: debreyno@hotmail.com. VCOT 2009 22 5 412-6 Rim resection of mandibular tumours and a simplified technique using a biradial osteotomy blade for maxillary tumours in dogs has not previously been described. The medical records and radiographs of dogs with mandibular (n = 3) or maxillary (n = 1) tumours resected using crescentic osteotomies were reviewed. The owners of two of the dogs reported excellent outcomes without any long-term complications or tumour recurrence. The goal of this study was to describe the surgical technique for performing a crescentic osteotomy for resection of maxillary and mandibular tumours. This technique for resection of mandibular and maxilla