In this study, we reviewed the clinical features of 11 patients with malignant schwannoma who were treated in our institute. Five patients had coexistent von Recklinghausen's disease and one of them showed multifocal occurrence. Patients with the centrally located tumors had a poorer prognosis than those with the others. The overall 3-year survival rate was 36%; 40% in patients with von Recklin...

We report an unusual case of a thoracic opacity due to a huge mediastinal malignant schwannoma which compressed the whole left lung and the mediastinum causing respiratory failure in a 73-year-old woman without von Recklinghausen's disease. Although the tumor was resected, the patient failed to wean from mechanical ventilation and died one month later because of multiple organ dysfunction syndr...

Psammomatous melanotic schwannoma (PMS) is a rare pigmented tumor that can be part of the Carney complex. Here, we describe the case of a 35-year-old female patient presenting an isolated subcutaneous PMS. Histopathological analysis could not formally exclude the malignant nature of the tumor. The challenging histological diagnosis and consequently the management of the patient are described.

A 4-year-old, female spayed Siberian husky with history of a uveal schwannoma presented for orbital swelling 9 months after enucleation. A second, malignant tumor developed in the same orbit. Therefore, uveal schwannomas may warrant early surgical intervention in the dog.

64 Unusal 3 tumor cases in zoo animals: Malignant Schwannoma, Combined Hepatocellular and Cholangiocellular Carcinoma and Carcinoid Lung Tumor N.Y. Park, H.S. Cho, Y.S. Kim, N.S. Shin, N.V. Kurkure, M. Subramanian Department of Veterinary Pathology, College of Veterinary Medicine, Chonnam National University, Gwangju, Korea 2 College of Veterinary Medicine, Seoul National University and KRF Zoo...