Retrobulbar Rhabdomyosarcoma in a Hovawart

Abstract

Neãas A., P. Rau‰er, F. Tich˘, P. Kohout, H. Kecová: Retrobulbar Rhabdomyosarcoma in a Hovawart. Acta Vet. Brno 2003, 72: 399-404. This clinical case study describes a three-year-old female Hovawart dog presented due to a unilateral exophtalmos and diagnosed with a retrobulbar tumour arising from m. rectus ventralis using ultrasound and computer tomography. The tumour was cytologically classified to be of a malignant mesenchymal kind. Modification of lateral orbitotomy with canthotomy was performed and the circumscribed tumour resected in its entirety. After healing, the eye was like the healthy contralateral one. Three months later, however, there was a relapse of the same extent and the patient was euthanised on the owner´s request. Rhabdomyosarcoma was confirmed by repeated histological examinations. Tumour, dog, orbitotomy

A Comparative Review of Canine and Human Rhabdomyosarcoma With Emphasis on Classification and Pathogenesis

“…31 Pleomorphic RMS is the least common (n = 2; 3%), 8,31 and botryoid RMS is the most common (n = 28; 43%), 3,11,31,47,54,64,65,68,73,83,108,115,131,138,140,141,144,155 followed by embryonal RMS (n = 15; 23%). 7,31,35,61,62,65,153,166,167 Unclassified RMS (RMS NOS) is prevalent in the literature (n = 13; 20%), 14,16,21,49,74,75,99,102,103,113,162 and probably reflects the lack of knowledge of RMS classification in veterinary medicine. Alveolar RMS (n = 7; 11%) is less frequently diagnosed in canines second only to pleomorphic RMS.…”

Canine orbital rhabdomyosarcoma: a report of 18 cases

“…Canine rhabdomyosarcomas occur most commonly in the larynx and urogenital tract and have been documented less frequently in the head, neck, and face . Cases of orbital rhabdomyosarcoma have rarely been reported in the dog …”