question: My husband, age 72, just had rotator cuff surgery. Since then he has been very lethargic and has had shortness of breath. He has an X-ray which showed nodules on both upper are of his lungs and the doctor thinks it might be blood clots. He has an appointment for a CATscan on Friday. Should I be concerned about cancer? If it is blood clots, anything he should do between now and his appointment?