Radiation Oncology/Uterine Sarcoma/Staging

Uterine Sarcomas Current Staging AJCC 7th Edition (2009) Corresponds to the updated FIGO staging (2009) FIGO 2009 PMID 19135669 -- "FIGO staging for uterine sarcomas." Note: This is a new staging classification for uterine sarcomas. Previously they were staged according to the system in use for other cancers of the uterine corpus (see: Endometrial staging) Includes: leiomyosarcoma, endometrial stromal sarcoma, adenosarcoma Carcinosarcoma (MMMT) should be staged as carcinoma Leiomyosarcoma and Endometrial Stromal Sarcoma Primary Tumor: T1 (I) - limited to the uterus T1a (IA) - 5 cm or less T1b (IB) - more than 5 cm T2 (II) - extends beyond uterus but within the pelvis T2a (IIA) - involves adnexa T2b (IIB) - involves other pelvic tissues T3 (III) - tumor infiltrates abdominal tissues (must infilitrate the tissues and not just protrude into the abdominal cavity) T3a (IIIA) - one site T3b (IIIB) - more than one site T4 (IVA) - invades bladder or rectum Adenosarcoma Primary Tumor: T1 (I) - limited to the uterus T1a (IA) - limited to the endometrium/endocervix T1b (IB) - invades ≤ 1/2 of the myometrium T1c (IC) - invades more than 1/2 of the myometrium T2 (II) - extends beyond uterus but within the pelvis T2a (IIA) - involves adnexa T2b (IIB) - involves other pelvic tissues T3 (III) - tumor infiltrates abdominal tissues (must infilitrate the tissues and not just protrude into the abdominal cavity) T3a (IIIA) - one site T3b (IIIB) - more than one site T4 (IVA) - invades bladder or rectum For All Sites Regional Lymph Nodes: pelvic or para-aortic N0 - no N1 (IIIC) - yes Distant Metastases: M0 - none M1 (IVB) - yes Stage Grouping: Corresponds to FIGO stage (given above in parentheses)