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BACKGROUND Unfractionated heparin and the low molecular weight heparin, dalteparin, are used for prophylaxis against venous thromboembolism in patients undergoing craniotomy. These drugs were compared in a randomized, prospective pilot study comparing intermittent pneumatic compression devices plus dalteparin to intermittent pneumatic compression devices(More)
We studied a series of 34 polycythemia vera (PV) patients to determine the incidence of chromosome abnormalities and their relationship to leukemic transformation. Metaphase chromosomes from bone marrow or unstimulated peripheral blood were examined with conventional stain and, in 20 patients, also with banding techniques. The overall incidence of clonal(More)
The BCL6 gene, which is expressed in certain B- and T-cell human lymphomas, is involved with chromosomal rearrangements and mutations in a number of these neoplasms. Lymphomagenesis is believed to evolve through a multi-step accumulation of genetic alterations in these tumors. We used retroviral insertional mutagenesis in transgenic mice expressing the(More)
The human BCL6 gene on chromosome 3 band q27, which encodes a transcriptional repressor, is implicated in the pathogenesis of human lymphomas, especially the diffuse large B-cell type. We previously identified the human PDCD2 (programmed cell death-2) gene as a target of BCL6 repression. PDCD2 encodes a protein that is expressed in many human tissues,(More)
OBJECTIVES This study evaluated the diagnostic value of dipyridamole plus low level treadmill exercise (dipyridamole stress) thallium-201 single-photon emission computed tomography (SPECT) in patients taking antianginal drugs. BACKGROUND Dipyridamole stress is the major substitute for maximal exercise in patients referred for myocardial perfusion imaging.(More)
BCL6, a gene on chromosome 3, band q27, encodes a zinc finger transcriptional repressor that is needed for germinal center formation and has been implicated in the pathogenesis of some human lymphomas when it is mutated or involved in chromosomal rearrangements. To explore further the mechanisms of action of BCL6 in lymphomagenesis, we developed a(More)
Two patients with acute promyelocytic leukemia had an identical chromosomal abnormality detected by fluoresecence banding. In each case, the clinical course was rapidly fatal, and was characterized by a lack of response to chemotherapy with cytarabine and thioguanine, and was complicated by disseminated intravascular coagulation. Bone marrow cells from each(More)
OBJECTIVE To determine whether perioperative subcutaneous heparin is safe to use for patients undergoing craniotomy and to determine the incidence of venous thromboembolism in patients undergoing craniotomy. METHODS Perioperative prophylaxis with subcutaneous heparin, 5000 U every 12 hours, was begun at induction of anesthesia for craniotomy and continued(More)
Myasthenia gravis (MG) is an autoimmune disease mediated by antibodies to acetylcholine receptors (AChRs) or muscle specific tyrosine kinase (MuSK). While the frequent association of MG with thymoma in patients aged 40-60 years is well recognized, its occurrence in patients with lymphoma has not been well studied. We review the literature on the association(More)
BACKGROUND Image artifacts caused by nonuniform photon attenuation are a source of error in interpretation of images during myocardial perfusion single photon emission computed tomography (SPECT). A newly introduced attenuation correction method was evaluated for improvement in image homogeneity during 201Tl SPECT. The method was assessed with a cardiac(More)