I have a dwarf hamster called Chewie, and while cleaning out his cage today I felt a lump on his stomach. He's a fidgety boi at the best of times so this was the best picture I could get - is it a scent gland? It matches the location from what I've read, but when comparing pictures this seems to be a bit larger and with more secretion. Any advice would be much appreciated!
https://i.imgur.com/q8UWCJW.jpg