40 year old man with abdominal pain.
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CT reveals a confluent mass which is encasing the abdominal aorta and its branches. These images two classic signs of lymphoma.
The "sandwich sign" which refers to sandwiching of vessels by lymphoma and not narrowing them.
The other sign is "floating aorta" sign - the aorta is lifted away from the vertebral column by the lymphoma mass.
Final diagnosis: Lymphoma (Hodgkins)
Special thank you to Dr Kapil Naik, Radiologist GOA, INDIA