Computed tomography appearances in the linear sebaceous naevus syndrome

Abstract
The appearance of C. T. of the head in 11 cases of the linear sebaceous naevus syndrome are presented. From these it is argued that the pathology represents a disorder of neuronal migration and organisation rather than differentiation. Since three of the cases had evidence of CNS tumour in addition to two in the literature, it would appear that a further aspect of this disorder is a failure of growth constraint. This is paralleled by a similar tendency in the skin lesion which should be considered premalignant. Normal intelligence is rare in this condition and co-exists only with a normal C. T. scan. The early onset of fits is not necessarily associated with subsequent mental handicap.

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