This definition appears somewhat frequently
See other definitions of VAS
Samples in periodicals archive:
A vaccine-associated sarcoma (VAS) or feline injection-site sarcoma (FISS) is a type of malignant tumor found in cats (and rarely, dogs and ferrets) which has been...
After receiving three vaccines last year, Hozart, a beloved cat of the Gorden family, now suffers from vaccine-associated sarcoma (VAS), a type of cancer.
Natural support for cats with various forms of Cancer including Vaccine Associated Sarcoma.