An unusual arachnoid cyst of the thoracic spine is reported. The clinical and neuroradiological features are described.

A case of multiple hydatid cysts of the brain is reported. Computed tomographic and magnetic resonance imaging scanning revealed a thick and calcified pericystium. These findings allowed appropriate surgical planning, with a marked recovery of the neurological deficits and absence of relapse in the follow-up period.

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The authors present a group of 23 patients with extradural spinal metastases who had undergone surgical treatment with different approaches, with reference to the anatomical site of the tumours. They report the results and discuss the criteria of the different surgical technical choices.

The authors present a series of 37 traumatic intracerebral haematomas (ICH) evacuated by a simplified stereotactic surgical procedure. The mortality rate was 80% in patients with Glasgow coma scale (G.C.S.) scores of 3-5 and 25% in patients with scores of 6-7. There were no deaths in patients with G.C.S. of 8 or more. With the exception of the first group of patients, the results were better than those achieved by wide craniotomy. The importance of reduced operative trauma in patients with ICH, which often are associated with multifocal or diffuse brain injuries, are discussed.