<prompt> Carcinoma endometrium involving uterine cavity more than 10 cms long with early myometrial involvement isStage IaStage IbStage IIaStage IIb  <response>: Ans- The International Federation of Gynecology and ObstetricsFIGO staging system for carcinoma of corpus uteri is as follows:Stage IA-Tumor limited to endometrium 8 cmStage IB-Invasion to less than one half the myometrium 8 cmStage IC-Invasion to more than one half the myometriumStage IIA-Endocervical glandular involvement onlyStage lIB-Cervical stromal invasionStage IlIA-Tumor invades serosa andor adnexa andor positive peritoneal cytologyStage IIIB-Vaginal metastasisStage IUC-Metastases to pelvic andor para-aortic lymph nodesStage IVA-Tumor invasion of bladder andor bowel mucosaStage IVB-Distant metastases including intra-abdominal andor inguinal lymph nodesCases of carcinoma of the corpus should be classified or graded according to the degree of histologic differentiation. The histopathology and degree of differentiation is as follows:i. Class G1-Non squamous or non morular solid growth pattern of 5 or lessii. Class G2-Non squamous or non morular solid growth pattern of 6-50iii. Class G3-Non squamous or non morular solid growth pattern of more than 50Please note the new staging and use this for answering mcqsCARCINOMA OF THE ENDOMETRIUMIA Tumor confined to the uterus, no or 12 myometrial invasionIB Tumor confined to the uterus, 12 myometrial invasionII Cervical stromal invasion, but not beyond uterusIIIA Tumor invades serosa or adnexaIIIB Vaginal andor parametrial involvementIIIC1 Pelvic node involvementIIIC2 Para-aortic involvementIVA Tumor invasion bladder andor bowel mucosaIVB Distant metastases including abdominal metastases andor inguinal lymph nodes 