The authors present the CT findings in their personal series of 77 cases of neurofibromatosis, 34 cases of tuberous sclerosis, and 16 cases of Sturge-Weber disease. These findings are extensively illustrated and compared with those reported in the literature.

Legionnaires' disease (LD) commonly presents as an acute and fulminating pneumonia. The causative organism is a Gram-negative pleomorphic bacillus. We report a case which was associated with a transient thrombocytopenia and cerebellar ataxia for which no other cause was found.

In the article "Progressive dialysis encephalopathy" (Ann Neurol ~4 : 199-204, 1 9 7 8 ) , Drs Lederman and Henry considered the role of aluminum in the origin of dialysis encephalopathy 3s speculative. W-e were astonished that aluminum blood levels were not reported for their 9 patients.Like other authors 11, 31, we believe that aluminum toxicity probabl\, plays a role in the production of dialysis encephalopathv, at least in some cases.

Forty-six patients with gliomas were introduced after surgery into a therapeutic programme of six cycles of combination chemotherapy with VM26 and CCNU, followed by delayed irradiation six months after surgery with an average dose of 5,800 rads. After irradiation the same preradiation chemotherapy was readministered for an average of four cycles. The results were compared to those from another group of 28 patients treated only by the same chemotherapy (CRC and C groups sucessively). Twelve patients (26%) died before irradiation in the CRC group, six patients (13%) had recurrences at the time of irradiation, and 28 patients (61%) had no clinical or radiological signs of recurrence at the time of irradiation. For the total of treated patients the median survival after surgery was 17 months, and 46% of the patients were surviving at 18 months. The percentage of survivors at 18 months was significantly more elevated in the group treated by combination chemotherapy and delayed irradiation than in a control group treated by the same combination chemotherapy alone. This result suggests that in approximately 50% of cases combination chemotherapy after surgery, and delayed irradiation six months after surgery, cumulated their effects on survival time.