Borderline ovarian tumors (also called tumors of malignancy potential) are heterogeneous team of lesions histologically defined by atypical epithelial proliferation without stromal invasion.The majority of those tumors use to have a good forecast, what is not so habitual is that if the tumor has a big size in on elderly patient with basic cardiopulmonary pathology it can be a urgent situation that endangers the life of the patient.We present a clinical case of a pluripathology 79 years old female who comes for consultation with tachycardiatachypnea, incapacity for supine decubitus and dyspnea on minimal effort. A large ovarian-dependent abdominal tumor is diagnosed. Borderline left ovary tumor of 42 × 36 × 7 cm is removed. Good postoperative evolution. Disappearance of all respiratory and digestive symptoms after surgery. Evolution after one year remained asymptomatic and free of disease.