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: 

The patient, a 78-year-old African-American male with a history of chronic lymphocytic leukemia (CLL), hyperuricemia with chronic gouty arthropathy, and chronic kidney disease (CKD) stage 3, was admitted to the hospital with shortness of breath and fatigue. Upon evaluation, the patient was found to have a fever, low hemoglobin levels, and an oxygen saturation of 85%. A chest CT scan revealed a left lower lobe infiltrate. The patient was admitted to the ICU and started on vancomycin and cefepime. 

During the hospital course, the patient's respiratory distress improved, and his oxygen levels normalized. He was transfused with three units of packed red blood cells, and his methemoglobin levels trended down. The patient was transferred back to the floor after two days in the ICU. 

The patient continued to experience fevers, spiking as high as 102.7°F, for four days. He also presented with right knee pain and swelling, which was found to be caused by monosodium urate crystals. The patient was treated with colchicine and prednisone and discharged to a skilled nursing facility. 

Follow-up chest CT scans three months later documented resolution of the previously seen left lower lobe pulmonary infiltrate. The patient's white blood cell count is currently within normal limits, and he continues to be treated with ibrutinib, allopurinol, and colchicine.
