Metastatic axillary lymphadenopathy of unknown primary can be a very chellanging situation.
Usual potential sites include:
- occult breast cancer: the incidence of an axillary lymph node manifestation from an occult primary breast cancer is low, ranging from 0.3-0.8% of all patients with carcinoma of the breast at presentation 1
- occult lung cancer
- occult malignant melanoma
- occult head and neck malignancies
Radiographic work up
When a breast primary is suspected this is one of the indications for breast MRI.