Objectives: Females with unresectable rectal cancer have a poor prognosis. In some cases curative treatment for tumors infiltrating the internal genitalia (T4) may be achieved with multivisceral excision. Radiochemotherapy combined with extended resection can improve local control and survival. Aim of the study was to evaluate long-term oncological outcomes of combined curative therapy with sphincter preservation for women with T4 rectal cancer involving internal reproductive organs. Material and methods: Consecutive 21 females in years 1997-2003 underwent R0 anterior resection of the rectum with excision of internal genitalia in one tissue block combined with radiochemotherapy and were studied retrospectively. Two-year disease-free survival rates were analyzed in relation to patient age, tumor differentiation, lymph node metastases, blood loss, radial and distal resection margins. Results: Survival rate was significantly increased (p<0.05) for females after resections with distal margin minimum 1 cm and radial margin minimum 2 mm microscopically free of cancer infiltration (80.0 vs. 27.3% and 71.4 vs. 14.3%, respectively). Lymph node metastases also significantly influenced poor prognosis (85.7 vs. 35.7%). Age less than 60 years, well or moderate tumor differentiation and blood loss <1 L were related to enhanced survival but with the lack of statistical importance (66.7 vs. 41.8%, 55.6 vs. 55.0% and 75.0 vs. 47.1%, respectively). Conclusions: Extended surgery combined with radiochemotherapy may result in improved long-term outcomes for females with T4 rectal cancer infiltrating internal genitalia. Effective local control with adequate resection margins and node-negative status are significantly related to enhanced survival rates.