Malignant Rhabdoid Tumors (MRT) are rare tumors usually found in children. Approximately 30-35 new cases are diagnosed each year in the United States (or 3 per 1,000,000 children). Rhabdoid tumors are highly malignant and are usually found in the brain (AT/RT), but Gracie’s tumors were found in her liver and retroperitoneal areas, which is extremely rare. Rhabdoid tumors are very aggressive and are known to become resistant to chemotherapy.
Because it is so rare, there is not an abundance of information on rhabdoid out there. The links below will better explain Gracie’s diagnosis: