Extramedullary leukaemia.
D000208:Acute Disease; D001853:Bone Marrow; D002490:Central Nervous System / Q000528:radiation effects; D002493:Central Nervous System Diseases / Q000188:drug therapy / Q000628:therapy; D002648:Child; D002675:Child, Preschool; D004307:Dose-Response Relationship, Radiation; D005260:Female; D006801:Humans; D007223:Infant; D007938:Leukemia / Q000175:diagnosis*; D007945:Leukemia, Lymphoid / Q000097:blood / Q000188:drug therapy / Q000532:radiotherapy; D008297:Male; D010051:Ovarian Neoplasms / Q000150:complications; D013736:Testicular Neoplasms / Q000150:complications / Q000532:radiotherapy