A 56 year old Asian male patient attends your appointment in primary care. He tells you he is having problems with his water works for the past month. He has been getting up 3-4 times at night to pass water and it is affecting his daily routine as he is starting to feel tired due to the lack of sleep. He is also having increased urinary frequency during the day too. He tells you that he hasn’t been interested in eating lately as he just wants to nap around lunch time. He has not had a fever or experienced any dysuria. He denies seeing any blood in his urine or any foul smell. What is your most likely diagnosis?