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:

Patient Name: N/A
Date of Admission: N/A
Date of Discharge: N/A

Hospital Course:

The patient was admitted to the hospital for evaluation of abdominal pain. She had a history of breast cancer with metastasis to the lymph nodes, bone, and brain, and had undergone mastectomy, axillary dissection, and whole brain radiotherapy.

During hospitalization, a CT scan was performed which showed moderate amount of PI along the caecum, and ascending and proximal transverse colon. However, there were no signs of peritonism or sepsis on clinical examination and the patient was asymptomatic.

The surgical consultant recommended close conservative observation with supportive care alone. A follow-up CT scan showed an increase in the amount and extent of PI, but there were no other worrisome gastrointestinal findings on the CT and the patient continued to be asymptomatic.

Steroids were discontinued and a conservative approach was followed. A CT scan performed a month later documented resolution of the PI.

The patient was discharged without any complications and was instructed to follow-up with her treating physician.

Diagnosis:

N/A

Treatment:

Close conservative observation with supportive care alone.

Follow-Up:

The patient was advised to follow-up with her treating physician.

 radiotherapy for the following:

Clinical evaluation