Photographs of the ISL stages/grade of lymphedema. (A) Stage 1 mild lymphedema with <20% difference in limb size. (B) Stage 1 moderate lymphedema with a 20–40% difference in limb size. (C) Stage 2 moderate lymphedema with a 20–40% difference in limb size with associated fibrosis and irreversible edema. (D) Stage 3 severe lymphedema with >40% limb difference, and abnormal fat deposits.
Adapted from Cheng MH, Chang DW, Patel KM (editors): Principles and Practice of Lymphedema Surgery. Elsevier Inc.; Oxford, UK. ISBN: 978-0-323-29897-1. July 2015.