U P Kalyan-Raman

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Gangliogliomas are rare benign tumors of the central nervous system containing neoplastic ganglion and low grade glial cells. In studying 10 surgically treated cases, we evaluated the clinical, pathological, radiological, and immunocytochemical features, with follow-up. Ranging from 18 to 58 years in age, 7 patients were women, and 3 were men. The most(More)
Ten cases of sporadic cerebral amyloid angiopathy (CAA) were seen as intracranial hemorrhage. CAA was seen as a stroke or catastrophic intracranial hemorrhage in all cases. CAA complicated by intracranial hemorrhage carried a high mortality; 9 of 10 patients died in spite of aggressive medical or surgical treatment. Senile dementia of Alzheimer's type was(More)
The radiological and pathological findings in three children with pineocytomas are described. The patients presented with symptoms and signs of increased intracranial pressure. CT scans demonstrated obstructive hydrocephalus, but failed to visualize pineal masses that were subsequently seen on MR scans. A suboccipital, supracerebellar approach was used to(More)
Magnetic resonance imaging (MRI) has improved the diagnosis of several pathological entities of the brain. MRI especially has been credited with distinguishing demyelinating diseases of the central nervous system from other diseases. The presence of a mass effect in a demyelinating disorder, however, makes difficult the distinction between tumor and a(More)
Malignant astrocytoma of leptomeningeal origin is a rare central nervous system neoplasm. A study of surgical and autopsy material from a primary leptomeningeal malignant astrocytoma of the spinal cord is presented. The initial presentation was focal; an extramedullary, intradural mass caused thoracic cord compression, although at autopsy the neoplasm(More)
Calmodulin (CaM), a calcium-binding protein, is present in human tumor tissues and in meningioma. Following a purification procedure using DEAE-cellulose and the polymeric resin 3520, the CaM content of tumor extracts was assayed using CaM-deficient phosphodiesterase (PDE). In the presence of low amounts of the extracts, a concentration dependent(More)
Computed tomography and magnetic resonance imaging of an 85-year-old woman with bitemporal headaches revealed cystic lesions in the basal ganglia and cerebellum. The patient remained neurologically asymptomatic until just before her death at age 89. Autopsy revealed tumors of the brain, lungs, liver, periaortic lymph nodes, adrenal gland, and the pancreas.(More)
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