Retropharyngeal fibrosarcoma following radiation therapy for Hodgkin's lymphoma of the neck.
D000293:Adolescent; D002291:Carcinoma, Papillary / Q000209:etiology; D005354:Fibrosarcoma / Q000209:etiology*; D006258:Head and Neck Neoplasms / Q000209:etiology / Q000532:radiotherapy*; D006689:Hodgkin Disease / Q000532:radiotherapy*; D006801:Humans; D008297:Male; D009364:Neoplasm Recurrence, Local; D009381:Neoplasms, Radiation-Induced / Q000209:etiology*; D011878:Radiotherapy / Q000009:adverse effects*; D013964:Thyroid Neoplasms / Q000209:etiology