the role of angiogenic molecules, like vascular endothelial growth factor (vegf) and fibroblast growth factor (fgf) in tumor angiogenesis was well confirmed. photodynamic therapy (pdt) action is, to very high degree, based on tumor vasculature damage. therefore, it seemed to be important to evaluate growth factor receptors after pdt. the extent of receptor expression was studied by immuno-histo...

Vascular Endothelial Growth Factor (VEGF) plays an important role in tumor angiogenesis. Although several studies revealed on association of VEGF polymorphisms with gastric cancer, still the results are inconclusive.

Resumo O leiomiossarcoma de veia cava inferior (LVCI) é um raro tumor maligno mesenquimal. Seu tratamento cirúrgico desafio, pois necessita combinar margens cirúrgicas livres com reconstrução vascular, usando prótese ou enxerto autólogo, sutura primária ligadura simples sem da veia. A possível graças ao lento crescimento do tumor, permitindo o desenvolvimento circulação venosa colateral. Aprese...

In the present study, simulation of an immunotherapy effect for a known dynamical system, that describes process avascular, vascular, and metastasis tumor growth based on chemical network model, has been presented. To this end, square signals various amplitudes have used, to model external therapy control, in order affect population immune cells. The results simulations show certain values ampl...

We have enhanced a computational tumor model developed at the Los Alamos National Laboratory (LANL). We have modified portions of the model in order to accommodate the inclusion of vasculature (a blood-vessel system). Other modifications were made which allow chemotherapy treatments which are not cell cycle specific to be simulated. We have worked to increase the efficiency of the model code, r...

Introduction. Sinusoidal hemangioma is a rare variant of acquired cavernous hemangioma predominantly occurring in females. Very few case reports have been described in the literature. Case Report. We present a case of a 46-year-old woman who noticed a slowly growing, cutaneous nodule on the left breast. Local excision of the lesion was performed and histology allowed to find a sinusoidal hemang...

hemangiopericytoma is a vascular tumor that is rarely seen in the nose and paranasal sinuses. biological behavior of these tumors is not completely known, and their natural history is not predictable. this case report presents a patient with a sinonasal hemangiopericytoma. diagnosis and management of these uncommon tumors is discussed.

nasopharyngeal angiofibroma is a relatively uncommon vascular tumor affecting adolescent males and it characteristically originates in the posterior lateral wall of the nasopharynx. primary extra-nasopharyngeal angiofibroma is very rare. here, i present a case of angiofibroma of the parapharyngeal space in a 53-year-old woman with ct and sonographic findings.