Bilateral lipoma arborescens -A proliferative case demonstrating progression in an adolescent male.

CASE: We describe a case of extensive symptomatic bilateral lipoma arborescens of the knee in a 19-year-old man who suffered from recurrent knee effusions for many years. This patient had MRI evidence of progression of disease prior to arthroscopic intervention. He was treated with bilateral complete arthroscopic synovectomies, demonstrating no evidence of cartilage wear.
CONCLUSION: Lipoma arborescens is a progressive disease. Timely diagnosis and treatment may prevent disease evolution and sequela.