An intraoperative combination of cervico-subserosal myometrium application of the blue dye allows successful detection (83.3%) of sentinel LN in patients with endometrial cancer. Comparing SM and CSM groups the statistical significant difference was found in the DCLN/LN rate and mean number of sentinel lymph nodes (p = 0.03, p = 0.05, respectively). Clinical validity of this surgical procedure must be assessed prospectively.