[Anonymous]

I don’t want to scare you, but:
http://smallanimal.vethospital.ufl.edu/clinical-services/oncology/types-of-cancer-and-treatment/nasal-tumors-dogs/ excerpt below, click on link for full article

“Transient improvement in clinical signs is often noted with symptomatic treatments such as antibiotics, antihistamines and steroids, which often delays diagnosis”.