1. Malignant tumour in bone marrow (usually in the pelvis or in long bones)
   - Ewing's sarcoma, Ewing's tumor [US], Ewing's tumour [Brit, Cdn]

Type of: sarcoma

• genus Charronia
• genus Chateura
• genus Chauna
• genus Cheilanthes
• genus Cheiranthus
• genus Chelidonium
• genus Chelifer
• genus Chelone
• genus Chelonia
• genus Chelydra
• genus Chenopodium
• genus Chilomastix
• genus Chilomeniscus
• genus Chilomycterus
• genus Chilopsis
• genus Chimaera
• genus Chimaphila
• genus Chimonanthus
• genus Chinchilla
• genus Chinchona
• genus Chiococca
• genus Chionanthus
• genus Chirocephalus
• genus Chironomus
• genus Chiton