Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0027627 (metastases)
 103,950 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Three patients with epithelioid haemangioendothelioma (EHE) are described. Two patients presented with pulmonary infiltrates and one with a hepatic tumour. All had a metastatic disease ending fatally, and all were autopsied. The diagnosis was confirmed either by immunohistological or ultrastructural analysis. All three tumours were cytokeratin-negative and vimentin-positive, while only two contained cells reacting with the antibody of factor VIII-related antigen. Electron microscopy of the third tumour revealed features indicating endothelial differentiation. A short literature review is also presented demonstrating that the outlook of EHE is worse than previously thought.
 ...
PMID:Fatal epithelioid haemangioendothelioma presenting in the lung and liver. 309 56

In the light of a case of endotheliosarcoma of the thoracic aorta, the authors found in the literature 33 cases of aortic sarcomas and 13 of sarcomas of peripheral arteries. The clinical diagnosis of this rare tumor is difficult. The diagnosis can be made before surgery only on the basis of angiographic and CT scan findings, whilst in most instances common arterial lesions are suspected whether of atheromatous or embolic origin. The positive diagnosis of arterial sarcoma remains histological. The diagnosis of an endothelial tumor can be made with the help of the techniques of factor VIII, antigen H and, more recently, lectins. Surgical treatment by excision and restoration of continuity has most often been used. Alone or in combination with chemo and/or radiotherapy, it would seem to be inadequate to prevent progression which involves the invasion of adjacent tissues, tumor emboli or generalized metastases. The prognosis of such a tumor remains gloomy with an average life expectancy of one year and 7 months, regardless of the histological type of arterial sarcoma.
 ...
PMID:[Aortic sarcoma. A rare pathology]. 319 55

Metastases from an atypical fibroxanthoma of skin have been reported but are very few in the literature. We had a personal case which, originally localized on the nostril, gave metastases to the cervical regional lymph node with no local recurrence. We examined both the primary and metastatic tumor by conventional histological stains and by immunoperoxidase technique to localize lysozyme, alpha-1-antitrypsin, ferritin and factor VIII antigens. The results show a clear correspondence between the primary and metastatic tumor.
 ...
PMID:Metastatic atypical fibroxanthoma of skin. 330 32

The pathogenesis of Stewart-Treves syndrome remains controversial: angiosarcoma or epithelial cell metastases from a mammary carcinoma? The case reported here, with clinical signs of Stewart-Treves syndrome on one side and mastectomy for carcinoma on the other side of the body, revives the debate. Case-history. The patient was an 89-year old woman whose left breast had been removed in June, 1981 for carcinoma with lymph node involvement. One year after the operation, multiple lymphadenopathy developed in her right armpit and subclavian region. In December, 1984, her right arm became swollen by lymphoedema, while Kaposi-like and nodular skin lesions appeared on her right upper chest and upper back and on her right shoulder and arm. Radiography of the chest showed right pleural effusion, bronchial lymph node enlargement and a reticulate image in the right lung. In spite of chemotherapy, the patient died in April, 1985. Pathology. Pathological examinations included standard histology (HPS, PAS and Gordon-Sweet staining), immunohistochemistry, using anti-factor VIII, anti-keratin KL1 and anti-EMA antisera, and electron microscopy. Results. Irrespective of the skin area biopsied, the histological images were always the same, showing carcinomatous lymphangitis with a varying degree of invasion of the surrounding dermis. Staining of the reticulum enhanced the vascular basal membranes but did not mark the intraluminal tumoral cell population. Post-mortem examination confirmed that the malignant lymphangitis extended to the lung tissue, the oesophageal wall and the adrenal glands, and that the axillary and subclavian lymph nodes were invaded by metastases.(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:[Stewart-Treves pseudo-syndrome caused by cutaneo-lymphatic metastases of contralateral breast carcinoma]. 363 43

A 17-month-old infant with clinical and pathologic features of acute megakaryoblastic leukemia and myelofibrosis developed soft tissue metastases. Tissue from an orbital metastasis was biopsied and transplanted into a nude mouse. Histologically the tumor was composed of pleomorphic cells with single convoluted nuclei or multilobed nuclei and prominent granular cytoplasm and had an alveolar histologic pattern in some areas. The ultrastructural features of the tumor cells include multilobed nuclei with prominent nucleoli and cytoplasmic granules with the characteristics of alpha-granules. The tumor has been successfully passaged over a 1-year interval and appears to be a stable megakaryoblastic tumor cell line (CHRF-288). Cells from the tumor line are reactive for factor VIII related antigen and also have GpIIb IIIa complex antigen on the plasma membrane surface. This tumor line may be a useful system for investigation of megakaryocytic functions including the production and regulation of the various factors they produce.
 ...
PMID:Megakaryoblastic leukemia in an infant. Establishment of a megakaryocytic tumor cell line in athymic nude mice. 371 17

We describe an unusual type of carcinoma of the parotid gland in a 67-year-old man. Because of rapid tumor growth, radical parotidectomy was done. Light microscopic study of the tumor revealed focal gland formation with transition to anaplastic carcinoma. Among the undifferentiated mononuclear cells and bizarre large cells were scattered many osteoclastlike multinucleated giant cells. Immunohistochemical studies on paraffin sections revealed positive staining for epithelial membrane antigen in the epithelial component; however, the multinucleated giant cells were clearly negative for this antigen. Reactions for other cell constituents (carcinoembryonic antigen, alpha 1-antitrypsin, alpha-1-antichymotrypsin, Leu-M1, Leu-M3, lysozyme, and factor VIII-related antigen) were negative in both epithelial and giant cell components of the tumor. Electron microscopy revealed poorly formed cell junctions and numerous microvilli on the surface of the mononuclear tumor cells and multinucleated giant cells, features considered not of diagnostic significance. Similar to carcinomas with osteoclastlike multinucleated giant cells in other organs, this parotid gland tumor has shown clinical and morphologic evidence of aggressive growth; pulmonary metastases developed and the patient died 28 months after radical surgery.
 ...
PMID:Carcinoma of the parotid gland with osteoclastlike giant cells. Immunohistochemical and ultrastructural observations. 383 77

The first requirement of a new prognostic indicator is that it should possess a clear biological significance. Indeed, much evidence shows that tumor growth and metastasis depend on neovascularization. Tumor angiogenesis (TA) refers to the growth of new vessels toward and within the tumor; unless tumor neovascularization occurs, cell proliferation reaches a steady state, and the tumor grows no larger than about 2 mm greatest diameter. Moreover, for tumor cells to metastasize, they must gain access to the vasculature from the primary tumor, survive the circulation, localize in the target organ, and induce angiogenesis in that target organ. TA is necessary both at the beginning and at the end of the metastatic cascade of events. Recently, my colleagues and I showed that a statistically significant correlation exists between incidence of metastases and microvessel density (MVD) of primary invasive breast carcinomas. Now, subsequent studies have shown that the association of prognosis with MVD exists not only in breast carcinoma but also in non-small-cell lung carcinoma, prostate carcinoma, and head-and-neck carcinoma. This article reviews the concepts and mechanisms of TA, the evidence supporting its role in growth and metastasis of solid tumors, and how measuring MVD within invasive tumors correlates with factor VIII-related antigen, blood vessel.
 ...
PMID:Tumor angiogenesis: review of current applications in tumor prognostication. 751 Dec 50

Increased numbers of blood vessels (angiogenesis or neovascularization) in certain primary tumors correlates with an increased risk for metastatic disease. We therefore conducted a blinded review of the resected testicular germ cell tumors of 65 clinical stage A patients to evaluate the usefulness of angiogenesis in identifying those patients with clinically occult nodal metastases (pathological stage B). Angiogenesis was assessed in the primary tumors using an immunohistochemical stain for factor VIII-related antigen assay for quantitation of microvessel counts. Of 65 clinical stage A patients, 43 had pathological stage B disease at retroperitoneal lymph node dissection. Eleven patients had microvessel counts > 30 microvessels/x 400 high powered field, and all of these patients had pathological stage B disease (P = 0.02 in univariate analysis). Multiple regression analysis using microvessel count and other histological findings found to be prognostic (venous invasion, lymphatic invasion, presence of embryonal carcinoma, and absence of yolk sac tumor) showed that only the absence of a yolk sac tumor component was significantly predictive of occult metastases. This study shows that angiogenesis, as measured by quantitation of microvessel counts in the primary tumor of germ cell neoplasms, is significantly predictive of occult nodal metastatic disease by univariate analysis in clinical stage A patients. The prospective use of angiogenesis quantitation needs to be defined.
 ...
PMID:Neovascularization in clinical stage A testicular germ cell tumor: prediction of metastatic disease. 751 56

Tumor angiogenesis has recently been related to tumor growth and metastasis, which determine the clinical outcome of the patient. This study was designed to determine the relationship between angiogenesis in primary squamous cell carcinomas (SCC) of the head and neck and the development of recurrent or metastatic disease, or both. Different SCC of the head and neck were studied. Microvessels were selectively stained using a monoclonal antibody for factor VIII. Microvessel counts were performed in the tumor, in the tissues immediately adjacent, and in normal tissues of similar topographies. Microvessel counts were then correlated with clinical outcome (development of recurrent or metastatic disease, or both). Recurrent or metastatic disease, or both, developed in patients with high microvessel counts (mean, 121.25) in the tissues adjacent to the tumor 7 to 16 months after initial treatment. Those with low microvessel counts (mean, 33.75) were disease-free for 16 months to 6 years (p < 0.01). Microvessel counts inside the tumor were also higher in those in whom recurrences or metastasis, or both, developed, but were not statistically significant. In this study, angiogenesis was directly related to clinical outcome. Thus, angiogenesis may be an independent predictor of recurrent or metastatic disease, or both, which could help in the selection of patients with SCC of the head and neck for aggressive therapy.
 ...
PMID:The relationship of angiogenesis to biological activity in human squamous cell carcinomas of the head and neck. 752 Nov 49

Metastatic brain tumors are almost always associated with vasogenic brain edema, which in turn plays a pivotal role in the evolution of neurological morbidity associated with these lesions. Attention has recently focused on a group of proteinaceous vascular permeability factors (VPF's) that are capable of inducing angiogenesis and promoting increased capillary permeability. To test the hypothesis that metastatic brain tumors expressing VPF's are associated with peritumoral cerebral edema, a rabbit polyclonal immunoglobulin (Ig) G anti-VPF was used to immunostain pathological specimens of metastatic cerebral tumors obtained from 22 patients who underwent surgery at Yale-New Haven Hospital. Magnetic resonance (MR) imaging was used to correlate VPF staining in tumor tissue with the occurrence of peritumoral brain edema. A histological study of the microvasculature was then conducted by immunostaining the specimens for endothelial cell factor VIII surface antigen, using two gliosis specimens as controls. Results revealed 21 of 22 tumors stained positively for VPF's; the negative-VPF tumor was a melanoma that exhibited no peritumoral edema. Twenty of 22 tumors had MR imaging-evident vasogenic edema. The presence and intensity of VPF immunostaining of microvascular features were noted and compared. Factor VIII staining demonstrated tumor vascularity to be most abundant in VPF-rich regions of tumor. The authors therefore report a high correlation between the presence of VPF's and the occurrence of peritumoral brain edema associated with cerebral metastases.
 ...
PMID:Vascular permeability factor in brain metastases: correlation with vasogenic brain edema and tumor angiogenesis. 752 34


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>