Nodules and draining tracts.Vet Clin North Am Small Anim Pract. 1995 Jul; 25(4):887-900.VC
Many potential causes exist of nodules and draining tracts in cats. Treatment should not be undertaken until a definitive diagnosis is made. This may involve biopsies for histopathologic evaluation, sample collection and submittal for culture and sensitivity, cytologic evaluation of impression smears or needle aspirates, and serologic testing.