One of the rare variants of extranodal large B-cell lymphoma is intravascular large B-cell lymphoma (IVLBCL). Characteristics of IVLBCL include intraluminal selective proliferation of atypical lymphoid cells in small to medium-sized vessels. The etiologic of IVLBCL is unknown, but due to the growth pattern of this tumor, it is speculated that IVLBCL is caused by a defect in homing receptor of t...

background: wilms' tumor is an emberyonal tumor arising from remnants of immature renal tissue. her2/neu is an onco-protein which mediates cellular proliferation, differentiation and survival. methods: in the current study, we analyzed her2/neu expression in 40 wilms' tumors. the clinico-demographic data of 40 patients with wilms' tumor were retrieved. immunohistochemical staining for her2/neu ...

Tumor cells regulate their progression not only by the factors within cell bodies but also secretome they produce and secrete. While significantly alters fate of tumor themselves, growth surrounding including both companion cancer non-cancer cells. consists varying molecules that have been reported mostly tumor-promotive. Furthermore, pro-tumor capability is enhanced application chemotherapeuti...

background: neuroblastoma is the most common tumor in infancy and wilms’ tumor is the most common malignant tumor of kidney in childhood. both the tumors are usually within the differential diagnosis of each other. this study compares the clinical manifestations, sex and age distribution of childhood wilms’ tumor and neuroblastoma at one of tehran children hospitals. materials and methods: the ...

abstract gastrointestinal mesenchymal tumors are a group of tumors originating from the mesenchymal stem cells of the gi tract. digestive tract schwannomas are rare mesenchymal tumors which occur most frequently in the stomach. we report a 56-yearold woman who was examined endoscopically for dyspepsia which she had suffered from since 3 years ago. around gastric antral mass was seen. surgical r...