organophosphate insecticides such as diazinon are common to control pests in many agricultural fields that are located in the vicinity of fresh water resources. in this study male goldfish were exposed for 10 days at concentrations of 3 and 6 mg/ l diazinon (granules 10%) and after that histopathological effects of diazinon on some fish tissues were examined by light microscope. according this ...

OBJECTIVES Photodynamic therapy is a new focal therapy for prostate cancer. METHODS In this technique, a photosensitising agent is introduced intravenously, then activated by local laser illumination to induce tumour necrosis. Treatment efficacy is assessed by magnetic resonance imaging (MRI). RESULTS AND CONCLUSIONS We illustrate specific post-treatment MRI aspects at early and late follow...

Microscopic Findings Histologically, the epicardial arteries show extensive arteritis with a prominent eosinophilic component as well as plasma cells and lymphocytes. There was marked intimal and adventitial involvement with focal involvement of the media . No thrombosis is noted. Inflammation is focal . There are focal collections of macrophages. Subtle area of eosinophilic necrosis in the med...

Two cases of Kikuchi disease showed variable nodal enhancing features, including homogeneous enhancement and focal or extensive nodal necrosis on contrast-enhanced CT scans. At MR imaging, the area of central necrosis was isointense or hypointense on T1-weighted images and had a lower signal than nonnecrotic areas on T2-weighted images. The CT appearance of Kikuchi disease can be variable and c...

Myocardial infarction after coronary artery bypass graft (CABG) surgery has been described clinically in up to 30% of patients but there is little morphologic information about the character and pathogenesis of this myocardial injury. We studied myocardium in the distribution of bypassed and nonbypassed coronary arteries for the presence of contraction band necrosis as compared to coagulation n...

A patient presented with symptoms and signs of raised intracranial pressure and increasing focal deficit 13 months after stereotactic radiosurgical treatment of an arteriovenous malformation (AVM). Computed Tomography (CT) showed a mass lesion at the site of the previous abnormality typical of radiation necrosis, but with features identical to those of a malignant neoplasm. Biopsy confirmed cer...