Disappearing hemipelvis: Low grade osteosarcoma, an unusual and poorly described variant of Paget's Sarcoma.

Paget's sarcomatous transformation is a rare and potentially fatal complication of Paget's disease. Histologically, it is typically described as a high-grade and extremely aggressive malignancy. We present an unusual radiographic series from a patient diagnosed with a low-grade Paget's osteosarcoma, a very rare and poorly described variant of the disease.