Hemangiosarcoma in children: two case repots.
D002471:Cell Transformation, Neoplastic; D002675:Child, Preschool; D005260:Female; D006394:Hemangiosarcoma / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008854:Microscopy, Electron; D009333:Neck; D009777:Occipital Bone; D012186:Retroperitoneal Neoplasms / Q000473:pathology / Q000601:surgery*; D012535:Scalp; D012878:Skin Neoplasms / Q000473:pathology / Q000601:surgery