Is fluid in the lungs something that occurs with cats with hyperthyroidism?

Fluid in the lungs is not a direct result of hyperthyroidism in cats, but it can occur as a secondary complication. Hyperthyroidism can lead to hypertension and Heart disease, which may cause congestive heart failure and pulmonary edema. If a cat with hyperthyroidism shows signs of respiratory distress, it's important to consult a veterinarian for a thorough evaluation and appropriate treatment.