Fill in the chart to determine whether the etiology would lead to hypothyroidism or hyperthyroidism and whether it will increase or decrease T3/T4 and TSH levels. (the first one has been done for you)   Etiology Hypo or Hyperthyroidism Level of T3/T4 Level of TSH Pituitary tumor that destroys TSH-producing cells Hypothyroidism Decrease Decrease Proliferating pituitary tumor [ Select ] Hyperthyroidism Hypothyroidism [ Select ] Increase Decrease [ Select ] Increase Decrease Thyroid tumor that destroys cells [ Select ] Hypothyroidism Hyperthyroidism [ Select ] Increase Decrease [ Select ] Increase Decrease Proliferative thyroid tumor [ Select ] Hypothyroidism Hyperthyroidism [ Select ] Decrease Increase [ Select ] Increase Decrease