Intraoperative consultation (IC) is often used for surgical planning in gynecological oncology, primarily in ovarian and endometrial cancer surgery. However, there is limited research that compares IC diagnoses and results from definitive analyses. This retrospective study compares IC results and definitive analysis findings in terms of ovarian mass diagnoses and endometrial carcinoma patients consulted for myometrial invasion (MI) depth across 7 years (2012–2019). IC was performed in 282 cases to evaluate ovarian masses. The sensitivity of IC was 94% for benign ovarian masses and 90% for malignant ovarian masses. 92 cases were submitted to IC for endometrial carcinoma. Sensitivity was 80% for tumors with <50% MI and 74% for tumors with ≥50% MI. IC is an important method with high sensitivity and specificity for diagnosing ovarian masses and determining MI depth in endometrial carcinomas.