I have profound iron deficiency and mild anemia. dr sending me to oncologist to rule out blood cancer. wondering why with only mild anemia. ruled out gastrointestinal bleeding. enlarged supraclavicular node 1.4 cm but hasnt grown in a year. ?

See the oncologist: The benefit of doubt is what your doctor is after for your own health and safety, the subtle signs you described need to checked, and an oncologist would sort it out better, best wishes

The sentinel node: That supraclavicular node is considered a worrisome signal for possible cancer. The idea is drummed into students early in medical school. Stable a year or not, it is associated with various forms of cancer. Mild anemia is just another warning sign. It is better to find out it is something minor than miss a cancer that can be successfully treated in early stages.

Iron deficiency: I agree with Dr. H. You may have had long-standing iron deficiency from menstrual bleeding. Your diet without iron supplements may have been inadequate to avoid anemia. A cbc and differential blood count usually spots serious blood disorders like leukemia. The oncologist will advise you as to whether the lymph node should be biopsied.