Patients with ALK gene rearrangements often manifest dramatic responses to crizotinib, an ALK inhibitor. Accurate identification of patients with ALK-positive non-small cell lung cancer (NSCLC) is essential for the clinical application of ALK-targeted therapy. However, assessing EML4-ALK rearrangement in NSCLC remains challenging in routine pathology practice. The aim of this study was to compare the diagnostic accuracy of FISH, immunohistochemistry (IHC), and real-time quantitative RT-PCR (QPCR) methodologies for detection of EML4-ALK rearrangement in NSCLC and to appraise immunohistochemistry as a pre-screening tool. In this study, a total of 473 paraffin-embedded NSCLC samples from surgical resections and biopsies were analyzed by IHC with ALK antibody. ALK rearrangement was further confirmed by FISH and QPCR. ALK protein expression was detected in twenty patients (20/473, 4.2%). Of the 20 ALK-positive cases by IHC, 15 cases were further confirmed as ALK rearrangement by FISH, and 5 cases were not interpretable. Also, we evaluated 13 out of the 20 IHC-positive tissues by QPCR in additional to FISH, and found that 9 cases were positive and 2 cases were equivocal, whereas 2 cases were negative although they were positive by both IHC and FISH. The ALK status was concordant in 5 out of 8 cases that were interpretable by three methods. Additionally, none of the 110 IHC-negative cases with adenocarcinoma histology showed ALK rearrangements by FISH. Histologically, almost all the ALK-rearranged cases were adenocarcinoma, except that one case was sarcomatoid carcinoma. A solid signet-ring cell pattern or mucinous cribriform pattern was presented at least focally in all ALK-positive tumors. In conclusion, our findings suggested that ALK rearrangement was associated with ALK protein expression. The conventional IHC assay is a valuable tool for the pre-screening of patients with ALK rearrangement in clinical practice and a combination of FISH and QPCR is required for further confirmation.

Primary pulmonary angiosarcoma is a rare type of malignant vascular tumor with a very aggressive clinical course and a grim prognosis. To date, only a handful of cases have been reported in English literature. Its rarity and consequent low index of suspicion makes clinical diagnosis difficult. In this report we present three cases of primary pulmonary angiosarcoma with cough, hemoptysis, and progressive dyspnea to contribute to the sparse literature on this disease. A review is made of previous reports of primary pulmonary angiosarcomas, and the clinical characteristics, diagnosed method, treatment options, and prognosis of pulmonary angiosarcoma are also discussed.

Postpartum depression has been one of the most common psychological disorders in patients during postpartum period. The constant anxiety and depression during this period seriously affect the physiological and psychological health of both the mother and infant. Evidence-based nursing has been widely applied in clinical practice and has achieved remarkable results. However, the effect of evidencebased nursing on postpartum depression remains unclear. Pregnant women who were not diagnosed with postpartum depression during hospitalisation (Edinburgh Postpartum Depression Scale [EPDS] ≤ 13 points) but prone to postpartum depression (EPDS scores of 9-13) were recruited into the study. They were randomly divided into the Intervention group (N = 60) and Control group (N = 60).Hamilton Depression Scale (HAMD), Hamilton Anxiety Scale (HAMA), EPDS and Pittsburgh Sleep Quality Index (PSQI) were used to investigate the psychological outcomes of puerperae during and after the 6-week intervention. Both the intention-to-treat and per-protocol analyses showed that 6 weeks of evidencebased nursing intervention significantly reduced the incidence of postpartum depression. The application of the evidence-based nursing also improved the patients' satisfaction degree and effectively alleviated their anxiety according to both the intention-to-treat and per-protocol analyses. Evidence-based nursing intervention had positive effects against anxiety and depression in the postpartum period.