The replacement of lymphadenectomy with sentinel lymph node (SLN) mapping for the assessment of lymph node metastasis in endometrial carcinoma has proven advantageous, reducing surgical morbidity and operative time and enhancing detection of positive pelvic nodes [1,2]. However, studies suggest that bilateral mapping fails in 17–25 % of patients, which subsequently necessitates side-specific lymphadenectomy for accurate nodal assessment [3,4]. While a number of studies and meta-analyses have identified factors contributing to mapping failure - including but not limited to obesity, advanced age, lymphatic obstruction by tumor, and high-grade histology – the potential impact of anatomical variation of the cervix on SLN mapping success remains unexplored [[3], [4], [5], [6], [7], [8], [9]]. Cervix length and diameter have been shown to vary among patients and across the lifespan [10,11]. However, despite this variability, ICG injection for fluorescence imaging is performed using a standardized technique and concentration at the ectocervix. We hypothesized that increasing cervical length and diameter may correlate with reduced mapping success due to the greater diffusion distance required for ICG to reach the lymphatic channels.