<prompt> A patient with Ca endometrium has 50 myometrial invasion and vaginal metastasis. Pelvic and retroperitoneal lymph nodes are not involved. Peritoneal seedings are ve. The stage is:IIIaIIIbIIIc1IIIc2  <response>: FIGO Surgical Staging of Carcinoma of the Corpus Uteri: Stage I Stage Ia - Tumor limited to endometrium Stage Ib - Invasion to less than one-half the myometrium Stage Ic - Invasion to more than one-half the myometrium Stage II Stage IIa - Endocervical glandular involvement only Stage IIb - Cervical stromal invasion Stage III Stage IIIa - Tumor invades serosa andor adnexa, andor positive peritoneal cytology Stage IIIb - Vaginal metastases Stage IIIc - Metastases to pelvic andor paraaoic lymph nodes Stage IV Stage IVa - Tumor invades bladder andor bowel mucosa Stage IVb - Distant metastases including intra-abdominal andor inguinal lymph nodes Ref: Dorigo O., Goodman A. 2007. Chapter 51. Premalignant Malignant Disorders of the Uterine Corpus. In A.H. DeCherney, L. Nathan Eds,CURRENT Diagnosis Treatment Obstetrics Gynecology, 10e. 