Parosteal lipoma of the left femur: A case report.

Multidisciplinary team collaboration in the diagnosis of rare tumors such as parosteal lipoma is highly important, especially when suspicious of malignancy. The use of radiological and physical examinations is imperative to monitor recurrence and quality of life.

Balloon pericardiotomy for recurrent pericardial effusions following fontan revision.

Percutaneous balloon pericardiotomy (PBP) has been used in patients with recurrent pericardial effusions in which the chest and pericardium had not been previously entered and therefore concerns about adhesions were minimal. Few reports have depicted PBP for patients with recurrent pericardial effusions following open-heart surgery, in which adhesions may play a greater role. We report a successful creation of a pericardial window using PBP in a child with recurrent pericardial effusions after a Fontan revision.

Cerebral lateralization and color perception: a transcranial Doppler study.

Eight normal subjects were examined in dark, light and color conditions. Mean cerebral blood flow velocity (MBFV) were recorded almost simultaneously from their posterior cerebral arteries (PCA) using transcranial Doppler (TCD) ultrasound. The side-to-side difference was significant during the dark (p = 0.

Fourier analysis of the cerebrovascular system.

We performed Fourier analysis of the middle cerebral artery blood flow velocity waveform envelope in 14 normal subjects (group A) and 15 patients, of whom five had arteriovenous malformations (group B), five had cerebral vasospasm (group C), and five had arterial hypertension (group D). Measurements were obtained under conditions of normocapnia, hypercapnia, and hypocapnia. The Fourier coefficients measured in the first five harmonics of the Doppler waveforms of group A were used as the reference baseline and were compared with the coefficients found in the other three groups.

Chronic low back pain and the failed low back syndrome.

Disorders associated with back pain usually have two components. One pertains to the spinal disorder and the other to symptoms and signs that result from compromise of individual nerve roots, the cauda equina, or, in some cases, the conus medullaris. In this article, those spinal structures capable of giving rise to pain, its approximate distribution, the nature of the discomfort and disturbance of spinal and neural function consequent upon disease of the vertebral column, and the evaluation and management of the individual patient will be considered.

Microvasculopathy may precede idiopathic cerebral calcifications--case report.

Cerebral and cerebellar calcifications were discovered by computerized tomography (CT) in a man who presented with a dementing illness characterized by progressive memory loss, irritability, and dystonia. He had no known family. Magnetic resonance imaging showed areas of absent signal corresponding to the calcifications and areas of high-intensity signal on the T2-weighted images without counterpart on the CT.

AB variant GM2 gangliosidosis: cerebrospinal fluid and neuropathologic characteristics.

A child with AB variant GM2 gangliosidosis who had progressive intellectual deterioration and seizures commencing at the age of 12 months is described. Neuronal loss, and neuronal and astrocytic inclusions characteristic of the gangliosidoses, were seen on cortical biopsy. GM2 ganglioside was detected in the CSF.

Somatosensory-evoked potentials in spinal cord injuries.

Short-latency somatosensory-evoked potentials after peroneal nerve stimulation were recorded in 25 patients with long-standing incomplete spinal cord injuries. The results were correlated with the patient's ability to walk. Nine patients had normal latencies, and four of these patients had no useful function in their lower limbs.

Auditory evoked potentials in bacterial meningitis.

Auditory evoked potentials obtained on infants and children recovering from bacterial meningitis are effective in early and reliable detection of sensorineural deafness, particularly in those who demonstrate absence of wave I.

Chorea as a manifestation of bilateral subdural hematoma in an elderly man.

As in a previously described child with unilateral subdural hematoma, bilateral subdural hematoma in the adult can also be associated with reversible chorea.

The effect of epinephrine on phenylethanolamine N-methyltransferase in cultured explants of adrenal medulla.

The investigation reported here was designed to gain further insight into the mechanisms by which phenylethanolamine N-methyltransferase (PNMT) is regulated. Explants of adrenal medullae were cultured in defined media for up to 48 h, during which time the tissue remained histologically intact. Addition of epinephrine to the medium led to a diminution in the activity of PNMT, measurable in the dialyzed homogenates of the cultured tissue.

Primary leptomeningeal melanoma: an ultrastructural study.

A primary leptomeningeal melanoma in a 19-year-old white women has been shown by electron microscopy to contain light and dark cells. The light cells fill the subarachnoid space, contain mature melanosomes and exhibit intracytoplasmic fine fibrils. The dark cells are found within the collagen network of pia-arachnoid.

Basilar artery occlusion: clinical and radiological correlation.

Twenty patients with basilar artery occlusion and three patients with bilateral vertebral artery occlusions have been studied. The clinical data at the time of the ictus and the long-term follow-up data have been correlated with the site and extent of the basilar artery occlusion and the type of collateral flow. Patients with hypertension and with coma at the outset have a grave prognosis.

Whipple's disease of the central nervous system.

Whipple's disease presenting as a neurological disease without gastrointestinal symptoms is an unusual occurrence. A 40 year old man suffered hypersomnia, memory loss and progressive ophthalmoplegia for 6 months prior to death. The nature of this disease was not established during life.

Localization of speech parameters by brain scan.

Speech was studied in 18 patients who had a positive radioisotope brain scan within the left hemisphere and a history of a single stroke. Seventeen patients had definite language impariment. In most cases of either fluent or nonfluent aphasia, the center of the scan was behind the central sulcus.