Endoscopic ultrasound-guided minimally invasive tissue acquisition can be performed by two approaches as follows: Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) and endoscopic ultrasound-guided fine-needle biopsy (EUS-FNB). These have been evolved into leading approaches and widely used for the histological diagnosis of tumors in the gastrointestinal tract and adjacent organs. However, the role of EUS-FNA and EUS-FNB in disease diagnosis and evaluation remains controversial. Although the incidence of surgery-associated complications remains low, the consequences of needle tract seeding can be serious or even life-threatening. Recently, increasing case reports of needle tract seeding are emerging, especially caused by EUS-FNA. This complication needs serious consideration. In the present work, we integrated these case reports and the related literature, and summarized the relevant cases and technical characteristics of needle tract seeding caused by EUS-FNA and EUS-FNB. Collectively, our findings provided valuable insights into the prevention and reduction of such serious complication.
Drawing on achievement goal theory and the dualistic model of passion, this study identifies (1) mastery versus performance climate as the contextual antecedent for harmonious versus obsessive passion, respectively, and (2) proactive versus pro-job unethical behavior as the outcome of harmonious versus obsessive passion, respectively. Results from two studies-a survey study with 259 leader-subordinate dyads and an experimental study with 174 part-time master's-level students-largely supported our theoretical model. First, employees develop harmonious passion when they perceive the presence of a mastery climate, but develop obsessive passion when they perceive the presence of a performance climate. Second, harmonious passion mediates the positive effect of mastery climate on employees' proactive work behavior, whereas obsessive passion mediates the positive effect of performance climate on employees' pro-job unethical behavior. Theoretical contributions and practical implications are also discussed.
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