purpose : to determine the association between retinal vascular diameter and its branching angles with diabetic retinopathy (dr) stages in diabetic patients methods : a descriptive analytic cross-sectional study was conducted in 62 diabetic patients (120 eyes) referred to farabi eye hospital between june 2008 and december 2009. digital fundus photography pictures were imported into photoshop so...

The dissemination activity of malignant neoplasms largely determines the prognosis in patients with tumors various localizations. Tumor growth depends on intensity formation new blood and alternative vessels. Vasculogenic mimicry (VM) differs from conventional neoangiovasculogenetic process involving vascular endothelium. VM is an type supply independent endothelial vessels, which refers to ves...

There are numerous pancreatic and peripancreatic conditions that can mimic pancreatic neoplasms. Many of these can be confidently diagnosed on computed tomography (CT), while others will require further imaging. Knowledge of these tumour mimics is important to avoid misclassification of benign conditions as malignant and to avoid unnecessary surgery. Mimics can be grouped as parenchymal, vascul...

Lower gastrointestinal bleeding is a common disease among elderly patients. The common sources of lower gastrointestinal bleeding include vascular disease, Crohn's disease, neoplasms, inflammatory bowel disease, hemorrhoids, and ischemic colitis. Lower gastrointestinal bleeding arising from the appendix is an extremely rare condition. We report a case of appendiceal hemorrhage in a young male. ...

Proteus syndrome (PS) is a rare and sporadic disorder characterized by overgrowth of multiple tissues and a propensity to develop particular neoplasms. The clinical manifestations of PS include macrodactyly, vertebral abnormalities, asymmetric limb overgrowth and length discrepancy, hyperostosis, abnormal and asymmetric fat distribution, asymmetric muscle development, connective tissue nevi, an...

Bevacizumab is a recombinant humanised monoclonal antibody directed against the vascular endothelial growth factor (VEGF). The drug, alone or in combination with other anticancer agents, has been shown to be effective against several types of neoplasms. We report a case of a woman with a history of severe psoriasis who developed psoriatic arthritis during a course of bevacizumab, which was admi...

Juvenile nasopharyngeal angiofibroma (JNA) constitutes less than 0.5% of all head and neck neoplasms. It is a histopathologically benign, yet locally agressive, vascular tumor that occurs most frequently in males from 5 to 25 years. Advances in imaging and treatment techniques are now facilitated more accurate staging of this disease. In this study, we present a case of JNA, to whom pre-operati...

Intracranial Fibroblastic neoplasms developed in 16 of 19 hamsters inoculated intracerebrally with bovine papilloma virus. The tumors presumably arose in the meninges and infiltrated the adjacent brain along the vascular channels. Tumor nodules that developed in the subcutis of the extremities, ears, and body were probably due to viremia following intracerebral inoculation. Fibroblasts of the c...