Chondroblastoma and chondromyxoid fibroma.

Chondroblastoma and chondromyxoid fibroma are benign but locally aggressive bone tumors. Chondroblastoma, a destructive lesion with a thin radiodense border, is usually seen in the epiphysis of long bones. Chondromyxoid fibroma presents as a bigger, lucent, loculated lesion with a sharp sclerotic margin in the metaphysis of long bones. Although uncommon, these tumors can be challenging to manage. They share similarities in pathology that could be related to their histogenic similarity. Very rarely, chondroblastoma may lead to lung metastases; however, the mechanism is not well understood.

Leadership perspectives in multidisciplinary team meetings; observational assessment based on the ATLAS instrument in cancer care.

OBJECTIVES: High-quality leadership and chairing skills are central components in team performance during multidisciplinary team (MDT) meetings. We hypothesized that the recently developed A Tumor Leadership Assessment inStrument (ATLAS) could provide relevant information to support more detailed insights into MDT chairing and leadership aspects of relevance for team feedback and targeted improvements. MATERIALS AND METHODS: The observational assessment instrument ATLAS rates chairing and leadership skills during MDT meetings in 12 predefined domains that include e.g. time management, case prioritization, team involvement, discussion climate and clarity of treatment recommendations. We used ATLAS to prospectively assess 33 MDT meetings in neuro-oncology, sarcoma and hepatobiliary cancer. RESULTS: The aspects time management, effective case prioritization and provision of clear treatment plans were found to be well-functioning, whereas facilitatation of case discussions, encouragment of team member contributions, keeping the meeting focused and ability to summarize case discussions showed variable and partly weak results. CONCLUSION: We conclude that the ATLAS instrument effectively captures various aspects of MDT leadership and chairing skills. It may thereby provide relevant information to prioritize initiatives that support and develop effective teamwork and decision-making during MDT meetings.