Burchell, Richard K.Kirberger, Robert M.Janse van Rensburg, Drienie D. (Didi)2014-10-132014-10-132014-09-10Burchell, R.K., Kirberger, R.M. & Van Rensberg, D.D., 2014, 'Haemangiosarcoma of the os penis in a dog: The most common neoplasm of the canine penis', Journal of the South African Veterinary Association 85(1), Art. #1092, 4 pages. http://dx.DOI.org/ 10.10.4102/jsava.v85i1.1092.0038-2809 (print)2224-9435 (online)10.10.4102/jsava.v85i1.1092N-8699-2014http://hdl.handle.net/2263/42356A castrated 9-year-old intact male boerboel cross-breed dog was presented with a month-long history of stranguria. On physical examination, a mass was noted at the caudal extremity of the os penis. Haematology, serum chemistry and urinalysis were all unremarkable. Abdominal and urethral ultrasound demonstrated an enlarged bladder and a dilated urethra, which was followed to the caudal extremity of the os penis. A hyperechoic, roughly spherical, vascularised mass was noted at the caudal os penis, which resulted in obstruction of the penile urethra. Radiographs demonstrated a soft tissue mass with osteolysis of the os penis. Cytology suggested an osteosarcoma. Treatment included amputation of the penis and adjuvant doxorubicin with carboplatin. Histopathology of the penis confirmed a haemangiosarcoma. The patient survived for 20 months. This is only the second published case report describing a penile haemangiosarcoma, and the first published report demonstrating the treatment and outcome of a case of haemangiosarcoma of the os penis. Based on published and unpublished reports, haemangiosarcoma appears to be the most common neoplasm of the canine penis.en© 2014. The Authors. Licensee: AOSIS OpenJournals. This work is licensed under the Creative Commons Attribution License.HaemangiosarcomaDogsOs penisPenile haemangiosarcomaCanine penisArticle