"Circulating Cancer Cells / Macrophage HYbrid Cells in Patients With Sarcoma, Part 2"

"For patients with localized leiomyosarcoma, samples will be collected:~* At Baseline.~* Before surgery (for patients who have had neoadjuvant treatment (external radiotherapy and/or chemotherapy)).~* After surgery.~* At each control visit.~* At local or metastatic recurrence (or at 24 months post inclusion if no progression).~For patients with metastatic leiomyosarcoma, samples will be collected:~* At Baseline.~* At each therapeutic line.~* At progression (or at 24 months post inclusion if no progression)."