Posterior fossa syndrome (PFS) due to vascular etiology is rare in children and adults. To the best of our knowledge, PFS due to cerebellar stroke has only been reported in patients who also underwent surgical treatment of the underlying vascular cause. We report longitudinal clinical, neurocognitive and neuroradiological findings in a 71-year-old right-handed patient who developed PFS following a right cerebellar haemorrhage that was not surgically evacuated. During follow-up, functional neuroimaging was conducted by means of quantified Tc-99m-ECD SPECT studies. After a 10-day period of akinetic mutism, the clinical picture developed into cerebellar cognitive affective syndrome (CCAS) with reversion to a previously learnt accent, consistent with neurogenic foreign accent syndrome (FAS). No psychometric evidence for dementia was found. Quantified Tc-99m-ECD SPECT studies consistently disclosed perfusional deficits in the anatomoclinically suspected but structurally intact bilateral prefrontal brain regions. Since no surgical treatment of the cerebellar haematoma was performed, this case report is presumably the first description of pure, "non-surgical vascular PFS". In addition, reversion to a previously learnt accent which represents a subtype of FAS has never been reported after cerebellar damage. The combination of this unique constellation of poststroke neurobehavioural changes reflected on SPECT shows that the cerebellum is crucially implicated in the modulation of neurocognitive and affective processes. A decrease of excitatory impulses from the lesioned cerebellum to the structurally intact supratentorial network subserving cognitive, behavioural and affective processes constitutes the likely pathophysiological mechanism underlying PFS and CCAS in this patient.

The authors describe a 12-year old girl with a painful syndrome at the distal side of the left leg, resulting in limping, incapacity and severe muscle atrophy. Full investigation - no inflammatory laboratory signs, diffuse osteoporosis at the left leg, decreased bone mineral content at the same place, marked hypofixation on bone and vascular scintigraphy - suggested pseudodystrophy (5), which is often induced by psychological factors. Successful treatment was obtained by physiotherapy, hydrotherapy, slight doses of NSAID and psychological assistance. With regard to recent literature, the authors believe that reflex sympathetic dystrophy (RSD) in children is often over-diagnosed, since there are no recognised criteria for diagnosing RSD. Besides the clinical picture, changes on radiography (focal osteoporosis) and on scintigraphy (disturbed vascular scintigraphy with increased pooling in the initial phase and hyperfixation on bone scintigraphy) are necessary. When these are not available, pseudodystrophy is a more correct diagnosis.

We report the case of a 55-year-old male with flexion contractures of the hips and the knees due to an isolated adrenocorticotropin (ACTH) deficiency, a rare cause of secondary adrenal insufficiency. The presenting symptoms and signs, the laboratory investigations and the treatment are described. The case description is followed by a brief overview of ACTH deficiency and its symptoms and causes. Our case is then compared with other case reports available in the literature. The aetiology of the flexion contractures in adrenal insufficiency is still unclear. The authors want to draw attention to adrenal insufficiency as the cause of unexplained flexion contractures.

SummaryA case is presented of a 26-year-old male with a 8-day history of fever and back pain, and limb weakness beginning 24 hours before admission. An abscess caused by a staphylococcus aureus was localised in the thoracic paravertebral region with penetration in the subarachnoidal space at Tl. Myelography appeared to be superior to CAT-scan and NMRI of the cervico-thoracal region in supporting the diagnosis. Treatment by laminectomy of C7-T3 48 hours after admission did not lead to neuro logical improvement and an incomplete tetraplegia persisted. The importance and difficulty of early diagnosis is stressed.

Summary. A case of transverse myelitis in a 25-year-old patient was described. The transverse myelitis was caused by toxic cause, probably as a result of benzene poisoning. This diagnosis was based on:I. The differential diagnosis. 2. The patient's occupation. After consulting the literature, we think that this case of transverse myelitis based on a benzene poisoning is the first ever described.