SCHWANN CELL - Malignant schwannoma

The specimen is a large nodular tumour with a short length of large bowel adherent to part of the surface. The cut surface shows a grey-white nodular appearance with extensive areas of necrosis.
This woman presented at the age of seventy years with anorexia, weight loss, diarrhoea and haematuria. A mass was palpable in the abdomen; at operation this tumour was found in the retroperitoneal tissues; there were multiple satellite lesions present in the abdomen. The histology of the lesion is that of a malignant Schwannoma; she died some twelve months later with disseminated intra-abdominal disease and large bowel obstruction.