You are a medical doctor specialized in cancer diagnosis. 
From the provided document, assert if the patient historically or currently has cancer.
For each condition, only pick from "YES", "NO", or "MAYBE". And you must following format without anything further. The results have to be directly parseable with python json.loads(). 
Sample output: {"cancer": 'MAYBE'}.
Never output anything beyond the format.
Provided document: 
Hospital Course:
This 26-year-old primigravida unbooked patient with a past history of left salpingo-oophorectomy for a left ovarian mucinous adenocarcinoma presented to antenatal clinic at 23 weeks of pregnancy with abdominal distension. Per abdominal examination revealed ascites and a 24 weeks size uterus. Ultrasound examination revealed an intra-uterine pregnancy of 23 weeks and a right ovarian mass with internal echoes. The patient was diagnosed with recurrent ovarian ca in pregnancy and was advised surgical management. However, the patient declined and was prescribed chemotherapy, with two courses of single dose carboplatin 450mg I.V. administered three weeks apart. The patient experienced derange liver functions tests after the second course, and the third course could not be administered. Ascites was progressive despite chemotherapy, resulting in maternal respiratory distress and fetal growth restriction with oligohydramnios.

Delivery and Procedure:
At 34 weeks of the gestation period, an elective Cesarean section with staging laparotomy was performed because of breech presentation, decreased liquor, and gross ascites after completing steroid cover. During the operation, 20 liters of hemorrhagic ascetic fluid were drained, and the omentum was agglutinated over the intestine while deposits were present over the uterus. Right ovary was replaced by a tumor that was 15x15cm with rupture and hemorrhage. Total abdominal hysterectomy with right salpingo-oopherectomy, infracolic omentectomy, and appendectomy were performed. Peritoneal washings were captured, and multiple peritoneal biopsies were taken. Palpation of pelvic and para-aortic lymph nodes was negative. The patient had an uneventful recovery.

Outcome:
This live healthy baby girl weighing 2.3kg was delivered with APGAR scores of 6/10 and 8/10 at 1 and 5 minutes, respectively. The placenta appeared normal during delivery. Histopathology revealed mucinous adenocarcinoma of ovary. She was started on chemotherapy (carboplatin and paclitaxel) six days postoperative day 14, and she received six cycles. The patient and baby were healthy at follow-up six months later.

 the patient was referred to a specialist on the other side