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: [Name]
Age: 70
Gender: Male
Admission Date: [Admission Date]
Discharge Date: [Discharge Date]

Hospital Course:

The patient was admitted to our hospital due to hepatic dysfunction that was discovered during a routine health examination. The patient underwent a battery of tests, including blood tests, abdominal ultrasonography, enhanced computed tomography, and T2-weighted magnetic resonance imaging, which revealed an 8 × 7-mm solid mass at the gallbladder fundus and several stones in the gallbladder. Based on these findings, the patient was diagnosed with an intraepithelial papillary neoplasm (ICPN) with low-grade dysplasia.

Surgery was performed, and laparoscopic cholecystectomy and liver bed resection were carried out. The resected specimen revealed a 15 × 10-mm milky yellow mass at the gallbladder fundus with papillary lesions. Histopathological analysis confirmed the presence of papillary tumors with cystic formation, mucin secretion, and low-grade dysplasia. Immunohistochemical analysis of the mucosal characteristics showed that MUC1, MUC5AC, and MUC6 were positive, whereas MUC2 was negative. The Ki67 index was a little less than 10%, indicating that the tumor was not malignant.

The patient's postoperative course was good, and the patient did not experience any complications. The patient was discharged from the hospital 9 days after the operation, and a recurrence has not been detected for 3.5 years.

Diagnosis:

Intraepithelial papillary neoplasm (ICPN) with low-grade dysplasia.

Follow-up:

The patient should be closely monitored, and any new or suspicious symptoms should be immediately reported to the healthcare provider.

Discharge Medications:

N/A

Follow-up Appointments:

The patient should make an appointment with their healthcare provider for a check-up in 6 months to ensure that the patient is not experiencing any complications or recurrences.

Physician Signature:
[Physician Name]

plasia of the gallbladder. He was admitted