A review of the first CT scans of the head in patients referred from Kenyatta National Hospital
Strehlau, I C
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A total of 109 patients with CT scans of the head from Kenyatta National Hospital were reviewed. Twenty eight per cent of the patients were children under 10 years of age; the majority of whom hac a CT diagnosis of primary brain tumour. Primary brain tumours were the commonest intracranial lesions observed and accounted for 87%. The next common intracranial lesion was haemorrhage following trauma. Hydrocephalus was found in 19% of patients (70% were secondary to obstructing masses, 10% due to brain atrophy, 10% due to aqueductal stenosis and in 10% no demonstrable cause was shown). 90% of patients had a provisional diagnosis of space occupying lesion and headache was the most frequent presenting symptom (58%). The accuracy CT scanning as a screenlng technique was found to bs 100% (there were no false negatives although the follow-up period was short). By comparison, the diagnostic accuracy for plain skull radiography was found to be 49%, air encephalography /ventriculography 83% and angiography 69%. The diagnostic accuracy of CT for specific lesions e.g., traumatic haemorrhages, hydrocephalus, CSF cysts was found to be high and less for other lesions e.g., abscesses, tumours. A large number of patients were operated upon without invasive contrast studies e.g., angiography (66%). Hospital stay after CT was done and before definitive treatment commenced was found to be shorter (2verage 17.6 days) than hospital stay before CT was done (average 27.5 days).
CitationMaster of medicine (Diagnostic Radiology), University of Nairobi, 1988
University of NairobiSchool of medecine