Image 1 shows the antrum or outlet of the stomach. There are many black-based erosions. This means that the lining of the stomach has been injured and there is a black blood clot in the base of the erosions. Image 2 shows small, white-based erosions next to the dark hole called the pylorus, which is the outlet to the stomach. The bright white spots are light reflection while the bubbly white areas are swallowed saliva. These erosions can lead to ulcers. Aspirin or any of the arthritis medicines such as ibuprofen, Naprosyn, Motrin, Advil, Voltaren and Feldene can cause such erosions.