mediastinal

/ˌmidiəˈstaɪnəl/
adjective
  1. Relating to the mediastinum, the area in the chest between the lungs that contains the heart, trachea, esophagus, and other structures.
    • Mediastinal lymph nodes can become swollen during an infection.
    • The CT scan showed a mediastinal mass near the patient's heart.
    • The surgeon performed a mediastinal biopsy to check for cancer.