Advanced ovarian cancer imitating deep infiltrating endometriosis. Radical resection and reconstructive surgery of the anterior abdominal wall.

Endometriosis is a disease affecting approximately 10-15% of the female population of reproductive age [1]. A rare location is endometriosis in the scar after caesarean section - CSE (caesarean scar endometriosis) accounting for 0.5-1.0 % of all cases. Although endometriosis is usually a benign condition, its malignant transformation affects 0.7-1% of cases. In women diagnosed with ovarian cancer, foci of endometriosis are present in up to 30% of patients. This paper presents the case of a 36-year-old patient initially diagnosed with extensive endometriosis involving the anterior abdominal wall and the pelvis minor. After biopsy, a diagnosis of advanced low-grade serous ovarian cancer was established. The diagnostic methods used and the extent of surgery with reconstruction of the anterior abdominal wall were described.