[Effect of Qingfei Quyu Decoction in Prevention of Radiation Pneumonitis Induced by Concurrent Chemoradiotherapy for Esophageal Carcinoma Patients].

Objective: To assess the effect of Qingfei Quyu Decoction (QQD) in preventing radiation pneumonitis in esophageal carcinoma patients by concurrent using it with chemoradiotherapy.

Methods: A total of 120 patients with mid-late stage esophageal carcinoma were randomly assigned to the treatment group (60 cases) and the control group (60 cases). All patients received concurrent radiochemotherapy.

Malignant potential of oral and labial chronic discoid lupus erythematosus: a clinicopathological study of 87 cases.

Aims:  To investigate clinicopathological features and identify clinicopathological risk factors for the malignant transformation of oral and labial chronic discoid lupus erythematosus (DLE) in a relatively large number of patients from China.

Methods And Results: A total of 87 patients with clinical and histopathological diagnosis of DLE between 1993 and 2009 were reviewed retrospectively in our hospital. The average age at diagnosis was 51.

A novel GC-MS method for rapid determination of headspace oxygen in vials of pharmaceutical formulations.

A novel GC-MS method which requires small injection volumes was developed for fast and selective determination of headspace oxygen in pharmaceutical packages. This method does not require a specific GC column for separation of oxygen from other permanent gases such as nitrogen; instead it offers the advantage of using co-eluting nitrogen as the internal standard for quantifying oxygen in the headspace under electron ionization (EI, 70 eV) conditions. The relative ionization efficiency of oxygen to nitrogen, termed as ionization efficiency correction factor (IECF), can be measured using a control sample with known composition of oxygen and nitrogen such as the standard dry air used in this study.