Domestic Shorthaired cat with a nose mass

History of Present Illness

A 9-year-old, spayed, female Domestic Shorthair cat is brought to the clinic by her owner for evaluation. She has a small mass on the nasal planum that has been present for several months. The mass has recently increased in size and become ulcerated and painful. The mass was originally noted by the owner after the cat returned home from being missing for several days.