Background: For example, a radioactive isotope of iodine (I-131) is used in both the diagnosis and treatment of thyroid cancer. The thyroid will normally absorb some iodine to produce iodine-containing thyroid hormones. An overactive thyroid gland will absorb a larger amount of the radioactive material. If this is the case, more and more radioactive iodine can be administered, where it will cluster in the diseased portion of the thyroid tissue and kill some of the nearby cells. Cancer treatments often cause patients to feel very sick, because while the radiation treatment kills the unwanted cancer cells, it causes damage to some healthy cells in the process.

Situation: John is a doctor in a local hospital. Today, he is seeing two patients, patient A and patient B. Patient A has thyroid cancer, but patient B does not have thyroid cancer. John is trying to see the difference between these two patients' reports.

Question: Which patient's diagnosis would require radioactive isotope of iodine, patient A or patient B?
Answer: patient A

Situation: John is a doctor in a local hospital. Today, he is seeing two patients, patient A and patient B. Patient A has thyroid cancer, but patient B does not have thyroid cancer. John is trying to see the difference between these two patients' reports.

Question: Which patient's diagnosis would not require radioactive isotope of iodine, patient A or patient B?
Answer: patient B

Situation: John is a doctor in a local hospital. Today, he is seeing two patients, patient A and patient B. Patient A has thyroid cancer, but patient B does not have thyroid cancer. John is trying to see the difference between these two patients' reports.

Question: Which patient would have an overactive thyroid gland, patient A or patient B?
Answer: patient A

Situation: John is a doctor in a local hospital. Today, he is seeing two patients, patient A and patient B. Patient A has thyroid cancer, but patient B does not have thyroid cancer. John is trying to see the difference between these two patients' reports.

Question: Which patient would not have an overactive thyroid gland, patient A or patient B?
Answer: patient B

Situation: John is a doctor in a local hospital. Today, he is seeing two patients, patient A and patient B. Patient A has thyroid cancer, but patient B does not have thyroid cancer. John is trying to see the difference between these two patients' reports.

Question: Which patient's thyroid gland would absorb larger amount of radioacive material, patient A or patient B?
Answer: patient A

Situation: John is a doctor in a local hospital. Today, he is seeing two patients, patient A and patient B. Patient A has thyroid cancer, but patient B does not have thyroid cancer. John is trying to see the difference between these two patients' reports.

Question: Which patient's thyroid gland would absorb smaller amount of radioacive material, patient A or patient B?
Answer: patient B

Situation: John is a doctor in a local hospital. Today, he is seeing two patients, patient A and patient B. Patient A has thyroid cancer, but patient B does not have thyroid cancer. John is trying to see the difference between these two patients' reports.

Question: Would patient A's thyroid gland absorb larger or smaller amount of radioactive material than patient B?
Answer: larger

Situation: John is a doctor in a local hospital. Today, he is seeing two patients, patient A and patient B. Patient A has thyroid cancer, but patient B does not have thyroid cancer. John is trying to see the difference between these two patients' reports.

Question: Would patient B's thyroid gland absorb larger or smaller amount of radioactive material than patient A?
Answer: smaller

Situation: John is a doctor in a local hospital. Today, he is seeing two patients, patient A and patient B. Patient A has thyroid cancer, but patient B does not have thyroid cancer. John is trying to see the difference between these two patients' reports.

Question: Which patient would risk damaging healthy cells, patient A or patient B?
Answer: patient A

Situation: John is a doctor in a local hospital. Today, he is seeing two patients, patient A and patient B. Patient A has thyroid cancer, but patient B does not have thyroid cancer. John is trying to see the difference between these two patients' reports.

Question: Which patient might not risk damaging healthy cells, patient A or patient B?
Answer: patient B