Background: This paper aims to present a "pattern" of oncosurgery solution in a case generally considered unrecoverable: intestinal occlusion in case of ovarian carcinoma and carcinomatosis. Case Report: A 62-year-old female patient with ascites, carcinomatosis, unresectable pelvic tumour, and intestinal obstruction suffered a five-step oncosurgery "model": three surgical interventions overlapping chemotherapy administered via the systemic and intraperitoneal route: Step 1: colostomy and partial omentectomy; Step 2: five courses of systemic chemotherapy supported by granulocyte colony-stimulating factor; Step 3: radical surgery - total hysterectomy, bilateral adnexectomy, pelvic lymphadenectomy, omentectomy, appendectomy, pelvic peritonectomy, and hyperthermic intraperitoneal chemotherapy; Step 4: consolidation systemic chemotherapy consisting of three more similar cycles; Step 5: closure of the colostomy. Nine months after the beginning of treatment, the patient is with no evidence of disease. Conclusions: The association of surgical and oncologic treatment and the use of hyperthermic intraperitoneal chemotherapy (HIPEC) technology can solve some of these complex cases.