A case of mitoxantrone extravasation.

Introduction: Mitoxantrone is a chemotherapeutic agent approved for various diseases. The literature has been conflicting in classifying mitoxantrone as a vesicant or irritant.

Case Report: We report a patient who had an extravasation of mitoxantrone. Mitoxantrone was administered in 50 ml normal saline. After mitoxantrone was completely infused, the site appeared edematous and the blue color of mitoxantrone developed beneath the skin. The patient reported pain. The extravasation was treated with dexrazoxane and cold compresses. The pain improved each day. However, blistering developed five weeks later and the patient ultimately required surgical intervention for debridement and grafting.

Discussion: Extravasation events are rare and there are few controlled studies. Because of the similarities in chemical structures and mechanism of actions between mitoxantrone and anthracyclines, mitoxantrone extravasation is often treated similar to anthracyclines. Mitoxantrone's classification is unclear, as some literature classifies it as a vesicant and others as an irritant. Our case supports the categorization of mitoxantrone as a vesicant.