OnCo
termsTerm

Mediastinum

aka mediastinal, mediastinal nodes, mediastinal lymph nodes, hilar nodes, mediastinoscopy

The space in the middle of the chest between the two lungs, containing the heart, great vessels, windpipe, food pipe and the lymph nodes that lung cancer spreads to first.

Whether mediastinal lymph nodes contain tumour separates stage I-II lung cancer (surgery first) from stage III (chemoradiation or neoadjuvant chemo-immunotherapy), so they are sampled by EBUS or mediastinoscopy before any operation. Thymomas, lymphomas and germ cell tumours arise in the mediastinum; oesophageal cancer and its nodes lie within it. On PET reports 'uptake above mediastinum' is the Deauville reference level.

Category
Anatomy

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