[Enterprise countermeasures against workplace bullying and harassment and their association with prevalence of bullying and harassment, organizational climate, and employee perception of change].

Objectives: Although companies are required to implement countermeasures against workplace harassment, their effectiveness has not been verified. Therefore, in this study, we compared employees' awareness of the primary preventive measures or organizational climate and the prevalence of harassment in each company.

Methods: A total of 68 companies in Japan (with a total of approximately 20,000 employees) were targeted.

Utility and pitfalls of immunohistochemistry in the differential diagnosis between epithelioid mesothelioma and poorly differentiated lung squamous cell carcinoma.

Aims: The aims of this study were to clarify the usefulness of immunohistochemistry in the differential diagnosis of epithelioid mesothelioma with a solid growth pattern [solid epithelioid mesothelioma (SEM)] and poorly differentiated squamous cell carcinoma (PDSCC), and to confirm the validity of a specific type of antibody panel. Additionally, we aimed to clarify the pitfalls of immunohistochemical analyses.

Methods And Results: Formalin-fixed paraffin-embedded specimens from 36 cases of SEM and 38 cases of PDSCC were immunohistochemically examined for calretinin, podoplanin (D2-40), Wilms' tumour gene product (WT1), cytokeratin (CK) 5/6, p40, p63, carcinoembryonic antigen (CEA), epithelial-related antigen (MOC31), claudin-4, thyroid transcription factor-1 (TTF-1), and napsin A.