1/46. Early glial tumor metastases through a ventriculo-atrial shunt.A girl of 12 with a pontine polymorphous astrocytoma diffusely metastasizing to the spinal cord leptomeninges suddenly died 20 hours after the insertion of a right ventriculo-atrial shunt. Many severely damaged glial neoplastic cells were found in the blood vessels of the lung and liver.- - - - - - - - - - ranking = 1keywords = blood vessel, vessel (Clic here for more details about this article) |
2/46. MRI and ultrasound guided interstitial Nd:YAG laser phototherapy for palliative treatment of advanced head and neck tumors: clinical experience.Interstitial laser phototherapy (ILP) is a technique whereby laser energy is directly applied into tumors at variable depths. This technique is attractive, since it is minimally invasive and carries a low morbidity. It may allow treatment of deep and difficult to reach tumors in the head and neck and other areas when improved noninvasive monitoring techniques of laser-tissue interactions are developed. Recent studies demonstrate, respectively, the efficiency of ultrasound (UTZ) and magnetic resonance imaging (MRI) for real time interstitial needle placement in tumors, identification of vessels, monitoring and quantifying laser-induced tissue damages. We present a case in which a patient with recurrent, metastatic base of skull carcinoma has managed successfully with repeat ILP using MRI and UTZ guidance. Under heavy sedation, needles were placed in the tumor using MRI or UTZ guidance. Tumors were treated with a 600 mum flexible Nd:YAG laser fiberoptic passed through the needles. Laser-induced tissue photoablation was monitored using real time color flow Doppler UTZ or near real time fast spin-echo T2-weighted MRI. Posttreatment fine needle aspiration cytologic study demonstrated the presence of cellular debris and no viable cancer cells. Posttreatment follow-up MRI scans showed significant reduction of tumor size, and positron emission tomography (PET) revealed interval decrease in tumor metabolism. Treatments were accompanied by pain relief and improved functional abilities. ILP has now evolved into minimally invasive outpatient surgical procedure.(ABSTRACT TRUNCATED AT 250 WORDS)- - - - - - - - - - ranking = 0.095720202057258keywords = vessel (Clic here for more details about this article) |
3/46. jaw and pulpal metastasis of an adrenal neuroblastoma.Hematogenous spread of malignant tumors to the dental pulp is very rare. A case of adrenal neuroblastoma in a 71/2-year-old boy which metastasized to the mandible and dental pulp is described. Tumor cells were found within the pulpal blood vessels of a deciduous molar tooth.- - - - - - - - - - ranking = 1keywords = blood vessel, vessel (Clic here for more details about this article) |
4/46. A case of carcinoid.A patient is described with a malignant carcinoid tumour of the ileum with nodal secondaries causing mesenteric vessel occlusion and ileal infarction.- - - - - - - - - - ranking = 0.095720202057258keywords = vessel (Clic here for more details about this article) |
5/46. Intravascular occlusive therapy: use of interventional radiology in cancer patients.Selective transcatheter intravascular occlusion in the treatment of cancer patients is a valuable extension of interventional diagnostic radiology. Intra-arterial embolization may be performed with various substances, including autologous clot, autologous subcutaneous tissue, Gelfoam, and stainless steel coil. Clinical applications in cancer patients include control of gastrointestinal and genitourinary hemorrhage, preoperative reduction of tumor vascularity, control of local symptoms, and therapeutic reduction of tumor bulk. The technique has been used for preoperative and palliative treatment of neoplasms of the head and neck, kidney, liver, spleen, and soft tissue and bone. Transcatheter intravascular occlusion should be performed only by radiologists experienced in angiographic techniques. Inadvertent occlusion of a normal vessel and thromboembolism are possible complications.- - - - - - - - - - ranking = 0.095720202057258keywords = vessel (Clic here for more details about this article) |
6/46. Radionuclide studies in bronchogenic carcinoma of the Hilum. Scintigraphy and tomography: their complementary features.Thirty-eight cases with direct or indirect signs of hilar masses were investigated by roentgenologic, radioisotopic and surgical methods. Reasonable correlation between tomography and scintigraphy was confirmed, substantiating their complementary nature. Bronchogenic carcinoma of the central airways was most frequent among the hilar masses. Masses as well as other involvement of the bronchovascular structures of the hilum on conventional tomography were confirmed by the gallium-67 scan, and inhalation and perfusion scintigraphy. Some cases which simulated bronchogenic carcinoma were presented. Hilar masses without destruction of the bronchovascular structures showed normal inhalation and perfusion scintigrams with positive gallium-67 accumulation. These lesions were metastatic cancer, malignant lymphoma, and sarcoidosis. If these diseases involve the airways and the vessels of the hilum, differentiation from bronchogenic carcinoma may naturally be difficult.- - - - - - - - - - ranking = 0.095720202057258keywords = vessel (Clic here for more details about this article) |
7/46. Extended surgery with en bloc resection of the right common iliac vessels for lymph node metastasis of mucinous colon carcinoma: report of a case.We report herein the case of a 63-year-old woman who underwent surgery for recurrent mucinous carcinoma of the cecum. Recurrent metastatic lymph nodes had invaded the right common iliac vessels and right ureter, but she had no distant metastases and no peritoneal dissemination. Extended surgery with en bloc resection of the right iliac vessels and right ureter, and femorofemoral bypass were performed. Postoperatively, several complications developed which were successfully treated by further operations. By 1 year after surgery, she had no recurrent tumors on radiological examination, suggesting that our aggressive surgery with resection of the invaded regional vessels had effectively removed the recurrent tumors. This procedure may therefore significantly prolong the survival time and improve the quality of life of such patients.- - - - - - - - - - ranking = 0.6700414144008keywords = vessel (Clic here for more details about this article) |
8/46. Clinicopathologic case reports: optic nerve head metastasis.A case of tumor metastasis from carcinoma of the lung directly to the cribriform plate is described. Retina and optic nerve were involved, but there was no evidence of tumor invasion of the choroid. It is postulated that the original tumor embolus lodged in a cribriform branch of the arterial circle of Zinn or in the central retinal vessels.- - - - - - - - - - ranking = 0.095720202057258keywords = vessel (Clic here for more details about this article) |
9/46. Case report: recurrence of soft tissue MFH in bone due to minute intravenous tumor emboli detected by MRI.We recently encountered a case with local recurrence of malignant fibrous histiocytoma (MFH) in the bone after wide resection, caused by minute intravenous tumor emboli which were retrospectively detected in MR imaging. The patient was a 69-year-old woman who initially noticed a mass in her left thigh. The tumor was diagnosed to be MFH, therefore a wide resection was performed; although the tumor was closely attached to the periosteum, it was not difficult to dissect the tumor subperiosteally from the cortex of the femur. The patient received postoperative brachytherapy, but no chemotherapy. Two years later, the tumor recurred with bony destruction of the femur. We reviewed the pre-operative films obtained by various imaging modalities, as well as the histology of the primary tumor, and found minute intravenous tumor emboli in the MR imaging obtained before surgery. Tumor emboli were also observed histologically in the small vessels of the surgically resected tumor. Such intravenous tumor emboli have recently been implicated in the development of regional bone metastasis near the site of the primary lesion in cases of malignant soft tissue tumors. Therefore, we concluded that the tumor recurrence in our case was caused by small tumor emboli invading the perforating veins of the femur. It is therefore emphasized that MR images should be carefully reviewed for the presence of such intravenous tumor emboli before surgery in cases of high-grade malignant sarcomas. As at the time of writing, our patient remains alive and disease-free, with no evidence of any local recurrence or distant metastasis after wide tumor resection for the recurrent tumor.- - - - - - - - - - ranking = 0.095720202057258keywords = vessel (Clic here for more details about this article) |
10/46. A case of intravascular large B-cell lymphoma with multiple organ involvement.Intravascular large B-cell lymphoma (IVL) is a rare systemic disease characterized by clonal proliferation of neoplastic lymphoid cells within the capillary lumina of small blood vessels. The most common sites of involvement are cerebrovascular or sinusoid areas, resulting in a wide variety of neurologic deficits. Herein we describe a case of IVL that presented with multiple internal and external organ involvements, including the skin, bilateral kidneys, and lung, and with an aggressive clinical course. The confirmative diagnosis was based on the microscopic findings of the skin lesion with a B-cell immunophenotype. The patient suffered from repeated severe dyspnea, hypoxemia, and high-grade fever with a simultaneous increase in serum lactate dehydrogenase and soluble IL-2 receptor levels. These manifestations responded dramatically to intravenous injection of corticosteroid (500 mg/day for 3 days). Despite various clinical presentations, no neurological abnormality was observed until the patient died 12 months after the initial combination chemotherapy.- - - - - - - - - - ranking = 1keywords = blood vessel, vessel (Clic here for more details about this article) |
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