- Dx Diagnosis, LM Leiomyoma, LMS Leiomyosarcoma, LMS—Rec Recurrent leiomyosarcoma, LMS—Met Metastatic leiomyosarcoma, ESS Endometrial stromal sarcoma, STUMP Smooth muscle tumor of uncertain malignant potential, SRC Sarcoma, TCs Tumor cells, LCs Lymphoid cells, PD-L1 Programmed death-ligand 1, PD-1 Programmed cell death protein 1, CTLA-4 Cytotoxic T-lymphocyte-associated protein 4, IDO Indoleamine 2,3-dioxygenase, Pos Positive reaction, Neg Negative reaction; Red, significant difference (p-value ≤ 0.05)