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A spayed Samoyed bitch, 12 years old, was presented to the Veterinary Clinical Hospital of the University of Cordoba (Spain) with abundant vulvar sanguineous discharge over the previous three days. The clinical examination revealed a remarkable vulvar mass, which protruded through the vulvar lips. Abdominal ultrasonography revealed the presence of structures compatible with uterus and ovary, which had been presumably removed eight years previously. An exploratory laparotomy was carried out, which confirmed the presence of the right ovary and a remnant of the uterus. The histological evaluation confirmed a granulosa cell tumour in the ovary, and an enlarged portion of the right uterine horn with brownish contents. The vulvar mass was also surgically removed and fibroma with some fibrosarcoma areas was diagnosed. This case shows the evolution of ovary and uterus into the abdomen, which were incorrectly removed after ovariohysterectomy eight years previously.

The clinical, pathological and immunohistochemical features of a hepatobiliary and pancreatic ganglioneuroma in a seven-month-old dog are described. The dog presented progressive weight loss, anorexia and abdominal pain. At laparoscopic examination numerous whitish nodules ranging from 0.5 to 1 cm in diameter were found in the peripancreatic tissues, the bile duct system and perihepatic tissues. Due to poor prognosis the dog was euthanized and necropsy was conducted. Tumour nodules were not noted in the other examined abdominal organs. Microscopically, the nodules were composed of large, well differentiated neurons embedded in an abundant stroma of nerve fibres and connective fibrous tissue. Through immunohistochemistry analysis, neurons were found to express neurofilaments and did not express S-100 protein. The histopathological and immunohistochemical features were consistent with a diagnosis of ganglioneuroma. This case is atypical as the majority of reported canine ganglioneuromas involve the gastrointestinal tract. The early age of the dog is also considered to be atypical for this tumour.