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Diagnostic errors discovered by CT in patients with suspected stroke

From the Departments of Medicine (Drs. Britton and Murray) and Diagnostic Radiology (Drs. Hindmarsh and Tydén), Karolinska Institute of Danderyd Hospital, Stockholm, Sweden.

We assessed the frequency of stroke diagnostic errors revealed by CT in 197 patients. In five Patients, CT was an emergency procedure. In the other 192 patients, CT was used to check diagnosis based on routine investigations. All but eight diagnoses (4%) were thereby confirmed. Either hemorrhage was discovered where an ischemic lesion had been suspected (2 cases) or the reverse (3 cases). Disorders other than stroke were found in three Patients—subdural hematoma, hydrocephalus, and suspected tumor. Thus, few but important errors investigations.

Address correspondence and reprint requests to Dr. Murray, Department of Medicine, Danderyd Hospital, S-182 88, DANDERYD, Sweden.

This study was supported by grants from the Foundations of Serafimerlasarettet, and Fredrik and Ingrid Thuring.

Accepted for publication March 8,1984.

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