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: 
Discharge Summary:

Admission Date: [Date]
Discharge Date: [Date]

Patient: [Name], Age: 63, Gender: Female

Admission Diagnosis: 
• cT3N2M0 stage IIIb rectal cancer
• Bloody stool

Hospital Course:
• The patient was started on mFOLFOX6 plus cetuximab as NAT.
• At the completion of five courses, the patient presented with complaints of no defecation for several days.
• Emergency colonoscopy revealed a stenosis in the lower rectum due to the primary tumor located 80 mm from the anal verge.
• CT showed a cPR of the tumor to the NAT.
• A SEMS (Niti-S Colonic Stent) was placed to alleviate the stenosis.
• NAT was restarted, and six courses were completed.
• The patient underwent laparoscopic low anterior resection with diverting ileostomy.
• Upon histopathological examination, the chemotherapeutic effect was grade 2.
• Adjuvant chemotherapy was started after surgery with mFOLFOX6.
• The patient had an uneventful postoperative course and was discharged 24 days after surgery.
• At the time of this writing, the patient had been alive without recurrence for 11 months.
 
Summary:
The patient, a 63-year-old woman, was admitted with complaints of bloody stool. Colonoscopy revealed a circumferential tumor in the lower rectum. The tumor was diagnosed as cT3N2M0 stage IIIb rectal cancer, and the patient was started on mFOLFOX6 plus cetuximab as NAT. Upon completion of five courses, the patient presented with complaints of no defecation due to stenosis caused by the tumor. The tumor exhibited a cPR to the NAT, and a SEMS was placed to alleviate the stenosis. After completing six courses of NAT, the patient underwent laparoscopic low anterior resection with diverting ileostomy. Histopathology showed a grade 2 chemotherapeutic effect. Adjuvant chemotherapy was started after surgery with mFOLFOX6. The patient was discharged 24 days after surgery and had been alive without recurrence for 11 months at the time of this writing.

 The patient underwent a biopsy in the early stages of