How do doctors check to see if my spleen is enlarged?

Physical exam: The spleen typically lies in the left upper abdomen, and under normal circumstances, in most people, cannot be felt or palpated as it is too high up behind the left rib cage. When it is enlarged, the doctor may feel it by having you take a deep breath in then out-causing the diaphragm to contract, pushing the spleen down and allowing the tip to be palpated. Serial exams helpful to monitor.

Many ways: First can try feeling for it. Then may see size by ultrasound or ct if suspicious enough.

Exam and CT: An enlarged spleen can usually be detected during a physical exam by feeling the abdomen. If there is a question, a CT scan would be very helpful

Physical exam: Physical exam can indicate very large spleen but ultrasound would be more accurate. So is the CT scan but at a higher price and also involving radiation dose.