Uni-centric, randomized, open-label, prospective interventional-comparative study, with a control arm (patients receiving standard preoperative information) and an experimental arm (patients receiving standard preoperative information and having access to a dematerialized educational video support).

Inclusion Criteria:

• Patients aged 18 or over,
• Patients requiring surgical management:

for therapeutic purposes (in the case of proven tumor histology) or for diagnostic and therapeutic purposes (in the absence of proven histology, but strong suspicion, after validation by RCP),

- Patients who have given their consent.

Exclusion Criteria:

• Patients under guardianship
• Patients with a history of thoracic surgery
• Patients on long-term analgesic medication
• Patients who do not speak French
• Patients unable to read or write
• Patients with major visual impairment
• Patients with chronic anxiety or depression at the time of admission
• Patients under guardianship
• Pregnant or breast-feeding women