What follows diagnosis by computed tomography of solitary brain tumour? Audit of one year's experience in South East Scotland.

The referral rate to neurosurgeons after diagnosis by computed tomography (CT) of solitary brain tumour (SBT) was audited for South East Scotland in 1985. 142 patients had SBT diagnosed by CT, but histological confirmation by biopsy or open operation was sought in only 67. Among these the CT diagnosis of glioma proved to be incorrect in 3 of 44 cases and that of solitary metastasis in 4 of 8 cases. Since CT diagnosis of SBT is not fully reliable, biopsy should be considered in all cases.