When doctors use the term tumor they are talking generically and not about the size of the lesion. A mass usually refers to a lump which is at least 20 mm (0.787 inches) in diameter at its widest point, while a nodule is less than 20 mm at its widest point.
But how big a spiral can you get? Our Milky Way galaxy is pretty beefy, one of the bigger spiral galaxies in the Universe. Itâs roughly 100,000 light-years across, or a quintillion kilometers. Thatâs a lot of kilometers. Donât go bragging to your friends just yet though.
However the size of observable universe is about: 46 Billion Light Years which is about... 2.70410991 Ã 10^23 miles (I can't even pronounce it without using mathematical terms) nor i can phantom how big that is. note: one light year is the distance a light could travel within one year.