1. A case is reported of a benign osteoblastoma of the body of the second thoracic vertebra causing paraplegia in a woman aged twenty-six. 2. The tumour was resected, apparently entirely, through a costo-transversectomy approach, and the paraplegia resolved almost completely. 3. Five and a half years later symptoms recurred, due to a recurrence in the form of a large, partly calcified tumour in the left upper thorax which was resected 4. The considerable histological differences between the original tumour and the recurrence are discussed.
1. A patient with Ollier's disease, who has been observed for fifty-four years, is described. 2. Repeated operations have been performed and the radiological appearances have been interpreted on several occasions as sarcomatous, but no evidence of malignant change has occurred.
