Signs of Thymoma

• Signs of thymoma include lethargy or change in personality. Owners often relate these signs to old age.
  
  

Symptoms of Thymoma

• Symptoms of thymoma in cats include coughing, muscle weakness and swelling of the head and neck.
  
  

Diagnosis

• Diagnosis is made by an aspiration cytology or a tissue biopsy of the mass.
  
  

Treatment

• According to the Veterinary Society of Surgical Oncology, treatment options for thymomas in animals include surgery, radiation therapy and chemotherapy. It's easier to remove thymoma in a cat than in a dog.
  
  

Outcome

• Following surgery you should follow up with your veterinarian every three months to check for reoccurrence.