“…In the current issue, Hirsch et al (2009) describe 2 horses that presented with cervical spinal cord disease, one of which was diagnosed with lymphohistiocytic lymphosarcoma and the other with haemangiosarcoma. In horses, the most commonly reported spinal tumour is melanoma (Traver et al 1977;Schott et al 1990;Tyler et al 1993;Rodriguez et al 1998;Patterson-Kane et al 2001), but others such as fibrosarcoma (Reinertson 1974), intestinal adenosarcoma (Spoormakers et al 2001), lymphoma (Lester et al 1992), pheochromocytoma (Froscher and Power 1982), plasma cell myeloma (Drew andGreatorex 1974), sarcomas (van Biervliet et al 2004), squamous cell carcinoma (Patterson et al 1990), as well as the here reported haemangiosarcoma (Newton-Clarke et al 1994;Berry 1999) and lymphosarcoma (Kannegieter and Alley 1987;Hartmann et al 1988;Zeman et al 1989;Gliatto and Alroy 1995) have been reported in the literature. In man, metastases arising from breast, prostate, kidney or lung cancer are the most common epidural tumours (Heidecke et al 2003).…”