title: Post-radiation sarcoma in ankylosing spondylitis. A report of five cases.
mesh_terms: D000328:Adult; D005260:Female; D005354:Fibrosarcoma / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D006801:Humans; D007085:Ilium; D007890:Leiomyosarcoma / Q000209:etiology*; D008159:Lumbar Vertebrae; D008175:Lung Neoplasms; D008297:Male; D008875:Middle Aged; D009192:Myelography; D009362:Neoplasm Metastasis; D009381:Neoplasms, Radiation-Induced; D009461:Neurologic Manifestations; D011878:Radiotherapy / Q000009:adverse effects*; D012446:Sacroiliac Joint; D012447:Sacrum; D013125:Spinal Neoplasms / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D013167:Spondylitis, Ankylosing / Q000532:radiotherapy*; D013904:Thoracic Vertebrae