Contrast enhanced MRI and Diffusion Weighted Imaging (DWI) in the evaluation of renal cell carcinoma and differentiation of its subtypes

Objective: The prognosis of different histologic subtypes of RCC varies and affects management. Patients with chromophobe or papillary RCC have better prognosis than those with clear cell RCC. The aim of our work was to study the utility of DCE and DWI in the preoperative prediction of renal cell carcinoma subtypes, using histopathology as a gold standard method of diagnosis. Patients and methods: Thirty five patients with 38 renal masses were included in the study. All had DCE MRI studies with DWI sequences, CER and ADC values calculation for normal and diseased renal tissues. Results: The Mean ADC value of normal renal parenchyma was significantly higher than RCC. The CER and ADC values for Clear cell RCC were higher than Papillary and Chromophobe RCC. No statistically significant difference was found between the CER & ADC values for Papillary and Chromophobe RCC. CER & ADC values of clear RCC were higher than non clear RCC. Conclusions: DCE MRI in addition to DWI & ADC appears as a very helpful imaging tool in the differentiation between clear cell and non-clear cell RCCs

Assessment of vascular invasion in pancreatic carcinoma by MDCT

Background: Pancreatic cancer is one of the aggressive cancers with poor resectability and survival rates. The relationship to adjacent vessels must be assessed before deciding the choice of treatment. Aim: Assessment of the MDCT signs of arterial and venous invasion in pancreatic carcinoma. Subjects and methods: Total of 179 of the major peripancreatic vessels (CA; CHA; SMA; PV; SMV) in 47 patients who underwent surgery for pancreatic cancer after MDCT were assessed at surgery and compared with CT findings. Statistical analysis of the findings was done using Chi square test. Results: 115 vessels were not invaded at surgery, while the remaining 64 vessels were invaded (22 arteries and 42 veins). There was over all statistically significant difference between arterial and venous invasion regarding stenosis, occlusion, infiltration and circumferential involvement of the vessel wall. Conclusion: Assessment of vascular invasion is crucial in the evaluation of resectability for pancreatic cancer. MDCT is an accurate diagnostic tool for peripancreatic vascular invasion in cancer pancreas

Enhancement of silicon nanowire micro-TEG using a plasmonic mid-IR absorber

[abstract not available

Immunohistochemical Evaluation of Histamine Levels and Hygienic Aspect of Little Tunny <i>(Euthynnus alletteratus)</i> Musculature at Different Environment Time and Temperature

 We investigated the effect of storage time and temperature on muscular histamine (HIS) contents in little tunny (LT). Fifty LT were preserved at various temperatures (0- 21°C). We collected muscles from several areas at 0-, 6-, 12-, 18-, and 24 h post-fishing for further examination. Throughout storage time and temperature, there was a significant increase in fish deterioration, HIS levels, and HFB count in abdominal > tail > dorsal muscle. Vitek2 gave 99% confidence identity of the highly histaminergic strains Lelliottia amnigena-1 and Acinetobacter haemolyticus. There was a positive correlation between HIS levels, HFB counts, and microscopic lesion scores during storage.</p