The agreement between three classification systems used to grade the severity of lymphedema in patients with upper and lower extremity lymphedema: A retrospective study.

Patients with upper extremity lymphedema classified according to these criteria can be assumed to be samples of the same population; however, patients with lower extremity lymphedema graded according to the ISL criteria may be included in a different classification when they grade with the APTA criteria and the criteria of Ramos et al.