title: Malignant histiocytoma of the arm in a four year old boy.
mesh_terms: D000367:Age Factors; D001132:Arm; D002648:Child; D002675:Child, Preschool; D018219:Histiocytoma, Benign Fibrous / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery*; D006801:Humans; D008197:Lymph Node Excision; D008207:Lymphatic Metastasis; D008297:Male; D012983:Soft Tissue Neoplasms / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery*