Retroperitoneal Castlemans disease mimicking a liver cancer: a case report.

Castleman disease (CD), a distinct lymphoproliferative disorder, is infrequently encountered in clinical practice and poses significant diagnostic challenges. We present the case of a 48-year-old asymptomatic female, admitted for evaluation of a hepatic mass detected in the liver's right lobe. Preoperative laboratory tests were within normal limits.

[Catalytic removal of NO on modified precious catalyst].

The streams of waste gases containing NO from industries would cause seriously pollution on the environment if they are directly discharged without further purification. The property of removal of NO from the waste gas at lower temperature performed on platinum catalyst by reduction with NH3 was investigated. Experimental study showed that the precious catalyst, platinum, had good activity at low temperature and high selectivity of catalytic removal of NO from the waste gas by ammonia.