Cases reported "Vascular Neoplasms"

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1/114. Intravascular lymphomatosis of the brain: a diagnostic problem.

    Intravascular lymphomatosis (of B- or T-cell origin) is a rare lymphoproliferative disorder characterised by neoplastic proliferation of lymphoid cells within the lumen of capillaries, small veins and arteries with no or minimal involvement of the parenchyma. Its predilection sites are the skin and the brain. We studied a 44-year-old man who presented with a 2 year history of unexplained LDH elevation followed by a neurological syndrome without systemic involvement. brain biopsy showed an intravascular lymphoma of the B-cell lineage. This report illustrates the diagnostic challenge of this rare disorder with a grim prognosis.
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keywords = vein
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2/114. Unilateral hydronephrosis and recurrent endometrial stromal sarcoma with review of the literature.

    In this case we present a woman with arterial hypertension. Further examination showed an unilateral hydronephrosis caused by extrinsic compression. A tumoral mass, invading the caval inferior vein and the renal vein, is the very origin of the compression. This mass is a recidive of an endometrial stromal sarcoma for which she had a hysterectomy in 1984.
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3/114. leiomyosarcoma of the pulmonary veins.

    Primary sarcomas of the great vessels are rare, but the most common site is the inferior vena cava. Herein are reported five new cases arising from the pulmonary veins with clinicopathologic correlation and comparison to previously reported cases. All new cases occurred in women ranging in age from 23 to 64 years at diagnosis (mean, 56 years). They had symptoms suggestive of left heart failure, including three patients with dyspnea, one with hemoptysis, and one with cough. Three cases showed tumor extension along the pulmonary veins into the left atrium. Tumors ranged in size from 2.8 to 7 cm in greatest dimension. Histologically, all were leiomyosarcomas. They were highly cellular tumors. Three cases had predominantly spindle cell morphology and two were predominantly epithelioid; one had foci of calcification. Most showed extensive necrosis. All tumors were reactive with antibodies to actin and desmin. Two cases were reactive with antibodies to MIC-2 (dotlike); two cases showed reactivity to keratin antibodies; and two showed reactivity for estrogen, progesterone receptor protein, or both. None were positive for antibodies to S-100 protein. All cases were treated with surgical excision. Follow-up ranged from 2 months to 21 years (mean, 4.8 years). Two patients were alive and well; two were alive with metastases; and one died of disease. Pulmonary vein sarcomas represent intermediate- to high-grade leiomyosarcoma. Although often lethal, complete surgical excision can lead to long-term survival. They occur predominantly in women and may express hormone receptors. Therefore, hormonal manipulation may offer promise as adjuvant therapy.
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keywords = vein
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4/114. External jugular vein hemangioma occurring as a lateral neck mass.

    hemangioma is an extremely frequent tumor, accounting for 7% of all benign neoplasms. In contrast, hemangioma arising in blood vessels is rare and should be differentiated from other neoplasms of vascular origin, such as hemangioendothelioma, hemangiopericytoma, hemangiosarcoma, and leiomyosarcoma. The case we report has the peculiarity of occurring as a lateral neck mass in which color-coded duplex sonography contributed significantly to diagnosis.
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ranking = 4
keywords = vein
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5/114. Evolution of pulmonary perfusion defects demonstrated with contrast-enhanced dynamic MR perfusion imaging.

    Pulmonary perfusion defects can be demonstrated with contrast-enhanced dynamic MR perfusion imaging. We present the case of a patient with a pulmonary artery sarcoma who presented with a post-operative pulmonary embolus and was followed in the post-operative period with dynamic contrast-enhanced MR perfusion imaging. This technique allows rapid imaging of the first passage of contrast material through the lung after bolus injection in a peripheral vein. To our knowledge, this case report is the first to describe the use of this MR technique in showing the evolution of peripheral pulmonary perfusion defects associated with pulmonary emboli.
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keywords = vein
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6/114. Planning and simulation of neurosurgery in a virtual reality environment.

    OBJECTIVE: To report our experience with preoperative neurosurgical planning in our stereoscopic virtual reality environment for 21 patients with intra- and extra-axial brain tumors and vascular malformations. methods: A neurosurgical planning system called VIVIAN (Virtual Intracranial Visualization and Navigation) was developed for the Dextroscope, a virtual reality environment in which the operator reaches with both hands behind a mirror into a computer-generated stereoscopic three-dimensional (3-D) object and moves and manipulates the object in real time with natural 3-D hand movements. Patient-specific data sets from multiple imaging techniques (magnetic resonance imaging, magnetic resonance angiography, magnetic resonance venography, and computed tomography) were coregistered, fused, and displayed as a stereoscopic 3-D object. A suite of 3-D tools accessible inside the VIVIAN workspace enabled users to coregister data, perform segmentation, obtain measurements, and simulate intraoperative viewpoints and the removal of bone and soft tissue. RESULTS: VIVIAN was used to plan neurosurgical procedures primarily in difficult-to-access areas, such as the cranial base and the deep brain. The intraoperative and virtual reality 3-D scenarios correlated well. The VIVIAN system substantially contributed to surgical planning by 1) providing a quick and better understanding of intracranial anatomic and abnormal spatial relationships, 2) simulating the craniotomy and the required cranial base bone work, and 3) simulating intraoperative views. CONCLUSION: The VIVIAN system allows users to work with complex imaging data in a fast, comprehensive, and intuitive manner. The 3-D interaction of this virtual reality environment is essential to the efficient assembly of surgically relevant spatial information from the data derived from multiple imaging techniques. The usefulness of the system is highly dependent on the accurate coregistration of the data and the real-time speed of the interaction.
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ranking = 0.0095996544015877
keywords = deep
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7/114. hemangioma of the umbilical cord: stenotic change of the umbilical vessels.

    We report a rare case of an umbilical cord hemangioma diagnosed by ultrasound at 16 weeks of gestation. The umbilical cord consisted of a hemangioma nodule and pseudocysts near the placental insertion, a large gelatin-like swelling adjacent to the nodule on its fetal side, and a short normal part extending to the navel. At 17 weeks of gestation, this condition resulted in the intrauterine death of the fetus. Microscopically, there were communications between the capillary of the hemangioma and the umbilical vessels, verifying the origin of the tumor. Moreover, the umbilical vein and one of the arteries changed stenotically due to the intravascular proliferation of the hemangioma. These findings indicate the possibility of a pathological association between the umbilical cord hemangioma and fetal demise due to impaired umbilical circulation.
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ranking = 1
keywords = vein
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8/114. Dual phase helical CT of a primary malignant fibrous histiocytoma of the right renal vein.

    A case is reported of primary malignant fibrous histiocytoma of the right renal vein involving the ipsilateral kidney which showed early enhancement on dual phase helical CT. The correct diagnosis of a primary tumour of the renal vein involving the kidney was not made but in retrospect could have been achieved pre-operatively by considering several CT features.
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ranking = 6
keywords = vein
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9/114. upper extremity pain of 10 years duration caused by a glomus tumor.

    BACKGROUND AND OBJECTIVES: Long-standing limb pain typically has a multifactorial etiology not amenable to causal therapy. We present a case of chronic progressing upper extremity pain caused by a glomus tumor; the excision was curative. methods: A 39-year-old woman presented with 10-year history of constant deep internal throbbing, aching pain localized to the radial aspect of the left index finger and additional intermittent shooting pains radiating up the arm toward the shoulder. pain was increased after minor local trauma, following cold exposure, and for unknown reasons. A blotchy, bluish skin discoloration could appear on the radial aspect of the index finger during severe pain. Nonsteroidal antinflammatory drugs, narcotics, amitriptyline, local heat, bracing, and a sympathetic nerve block had all been ineffective. The physical examination was characterized by exquisite pressure tenderness over the radial aspect of the left index finger, most pronounced just distal to the distal interphalengeal joint. RESULTS: Inflation of a left arm blood pressure cuff to above systolic pressures abolished pain. A glomus tumor was suspected and confirmed by histologic examination. CONCLUSIONS: Glomus tumors are rare, benign neoplasms (1 to 5% of all hand tumors), developing from neuromyoarterial glomus bodies. They usually present with pain and may mimic other painful conditions, delaying the average time until diagnosis for up to 10 years. The classic diagnostic triad consists of local pain, pressure tenderness, and cold hypersensitivity. Abolition of pain following inflation of a blood pressure cuff to above systolic levels (ischemia test) is highly diagnostic. We suggest routine use of this test in cases of upper limb pain of unclear etiology.
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ranking = 0.0095996544015877
keywords = deep
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10/114. Minimally invasive thymoma with extensive intravascular growth.

    A 70-year-old male with grossly non-invasive thymic tumor associated with myasthenia gravis was subjected to thymothymectomy. Microscopic examination showed extensive intravascular tumor extensions into veins of thymic tissue and surrounding muscles and a minute direct invasion of the thymic tissue. Histologically, the tumor showed mixed-type thymoma with polygonal epithelial cells. These pathological findings indicated that the tumor cells extended mainly into vessels beyond the tumor capsule via tumor drainage veins rather than invading neighboring structures. After chemotherapy and mediastinal irradiation, the patient is now in complete remission of myasthenia gravis and is recurrence-free 15 months after surgery.
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ranking = 2
keywords = vein
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