Mapping and Quantifying Lymphatic Drainage of the Arm's Alternate Pathway

Inclusion Criteria:

* Female
* History of breast cancer treatment including ALND - defined by removal of \>=10 lymph nodes - more than 2 years before study participation
* Ability to understand the protocol and willingness to participate
* At least 18 years of age

Exclusion Criteria:

* Prior history of bilateral lymph node surgery
* Prior history of other surgical procedures of the affected upper extremity besides the axillary management for breast cancer treatment
* Prior history of chronic inflammatory conditions (e.g. rheumatoid arthritis)
* Prior history of filarial infections
* Prior history of lymphedema
* Patient-reported pregnancy
* Patients who are breastfeeding
* Iodine allergy
* Prior history of upper extremity deep vein thrombosis
* Prior history of congestive heart failure
* Prior history of venous thoracic outlet syndrome
* Current active cancer