Measuring Fluid Buildup in Cancer Patients

Inclusion Criteria (Outpatient breast cancer patients with lymphoedema after radiotherapy): * Habile * Must be able to speak and read Danish * Has received/is receiving radiotherapy due to breast cancer within the last 6 months * Is being followed in the Oncology Outpatient Clinic at Aalborg University Hospital * Age ≥ 18 years * Visible lymphoedema in at least one upper extremity Inclusion Criteria (Hospitalized cancer patients with peripheral oedema in one or both lower extremities after chemotherapy): * Habile * Must be able to speak and read Danish * Has received/is receiving chemotherapy due to cancer within the last 2 months * Hospitalised in the Oncology Ward at Aalborg University Hospital * Estimated length of hospital stay of at least 6 days * Age ≥ 18 years * Visible peripheral oedema in at least one lower extremity Exclusion Criteria (both groups): * Pregnant or breastfeeding women * Amputated limb(s) * Pacemaker or implanted cardioverter-defibrillator due to risk of interference from the electrical signal * Metallic prostheses due to risk of interference with the device signal * Inability to lie still for the duration of the measurement interval (minimum 2 minutes at a time) * Inability to stand on a scale, i.e. permanently bedridden. * Inability to cooperate with urine collection * Receiving dialysis * Terminal illness