thirty malignant schwannomas from an 18-year period were studied , and the patients were divided into 3 groups : one with recklinghausen 's disease , one with tumours related to nerves but without recklinghausen 's disease and finally one with a histopathology best compatible with malignant schwannoma .
C0027831
recklinghausen 's disease
C0751690
malignant schwannoma