Gorham-Stout Disease Successfully Treated With Sirolimus and Zoledronic Acid Therapy

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Abstract
Gorham-Stout disease is a life-threatening disorder often manifested by lymphatic malformation and osteolysis. Unfortunately, available therapies are not uniformly effective and often carry substantial morbidity. We report an 18-year-old male with Gorham-Stout disease manifested by lytic rib lesions and an intractable pleural effusion that responded dramatically to the combination of the mammalian target of rapamycin (mTOR) inhibitor sirolimus and the aminobisphosphonate zoledronic acid after failing interferon therapy. This tolerable therapeutic combination has demonstrated synergism in preclinical cancer models and merits further study in vascular anomalies.

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