Objective To explore the role of magnetic resonance imaging (MRI) in distinguishing malignant from benign pleural *** All 64 patients were examined with both computed tomography (CT) and MRI. The morphologic feature...
详细信息
Objective To explore the role of magnetic resonance imaging (MRI) in distinguishing malignant from benign pleural *** All 64 patients were examined with both computed tomography (CT) and MRI. The morphologic features of pleural lesions and MR signal intensity on T1-weighted, T2-weighted and contrast-enhanced T1-weighted images were *** Mediastinal pleural involvement, circumferential pleural thickening, nodularity, irregularity of pleural contour, and infiltration of the chest wall and/or diaphragm were most suggestive of a malignant cause on CT and MR images. Contrary to what has been reported in the literature, pleural thickness greater than 1?cm either on CT or on MRI did not reveal a significant difference between malignant and benign pleural disease (P>0.05, chi-square test). Using morphologic features in combination with signal intensity features, MRI had a sensitivity of 98% and a specificity of 92% in the detection of pleural malignancy. Conclusions Compared with those on CT, the morphologic features on MRI allowed a mostly equal and in some cases superior detection and evaluation of the spread of pleural disease. In combination with signal intensity and morphologic features, MRI is very useful in distinguishing malignant from benign pleural disease.
The effects of counterions of citric acid and EDTA on the crystallization of calcium oxalate(CaO x )were in-vestigated in silica gel with a doubl e diffusion *** ability o f inhibiting the growth and aggregation of Ca...
详细信息
The effects of counterions of citric acid and EDTA on the crystallization of calcium oxalate(CaO x )were in-vestigated in silica gel with a doubl e diffusion *** ability o f inhibiting the growth and aggregation of CaO x crystal and the ability of inducing f ormation of COD follows:potassium c itratesodium citrate >citric *** 2 EDTA had a stronger ability to inhibi t the aggregation of CaO x crystals than that of EDTA,but a weak er ability to inhibit nucleation and growth of C aO x *** COM exhibits a greater degree of attachment to renal tubule cells in culture compared with COD,t hat is,COD is easy to be expelled from the body along with the *** both inducing formation of COD and in hibiting growth and aggregation of CaO x crystal can decrease the probability of urinary *** results hav e positive significance in the prevention and cure of urinary stones clin ically.
OBJECTIVE: Because maternal epidermal growth factor (EGF) may be an adaptive response to accelerate growth and maturation in premature infants, we compared the EGF content in fresh cow's milk and cow's milk-ba...
详细信息
OBJECTIVE: Because maternal epidermal growth factor (EGF) may be an adaptive response to accelerate growth and maturation in premature infants, we compared the EGF content in fresh cow's milk and cow's milk-based infant formulas with full and preterm mother's milk. METHODS: EGF content of 57 human colostrum from mothers delivering prematurely and at term, 4 different fresh cow's milk and 8 different cow's milk-based infant formulas was determined by radioimmunoassay (RIA). RESULTS: Human milk from mothers of premature infants had a higher EGF content compared to that from mothers of term infants (28.2 +/- 10.3 nmol/L vs. 17.3 +/- 9.6 nmol/L). EGF content in human milk negatively correlated with gestational age and birth weight of neonates. EGF content in fresh cow's milk (13.8 - 18.2 nmol/L) was similar to that in human term milk. EGF levels in non-hydrolyzed protein formulas were much lower (5.6 - 8.6 nmol/L), and were undetectable in hydrolyzed protein formulas. CONCLUSION: The high EGF content in premature milk may represent a maternal compensatory mechanism to accelerate the growth and development of immature infants. Feeding infants with breast milk from their own mother should be advocated since there is lack of EGF in cow's milk-based infant formulas.
暂无评论