Supraclavicular lymph nodes are located just above the collarbone (clavicle ... Retroperitoneal lymph nodes are situated at the back of the abdomen behind the tissues that cover the abdominal ...

Cancer can spread to the lymph nodes and make them bigger (enlarged). Testicular cancer can spread to the lymph nodes in the back of the tummy (retroperitoneal lymph nodes). They are just in front of ...