Lewy body dementia

A 66-year-old man is brought to his primary care provider's office by his daughter because of memory issues for the past year. His daughter reports that he has been having difficulties remembering his grandsons' birthdays. In addition, he has been getting lost driving to the local supermarket. There would be times in which the patient would stare blankly for several minutes and not recall the episode. She also reports an episode in which the patient had a conversation with his wife who passed away 10 years ago. When questioned, the patient angrily denies having any memory problems. Physical examination shows a pleasant elderly gentleman in no acute distress. He has a mild resting tremor of the right hand. Which of the following is most likely to be seen on brain histology slides of this patient's disease?