A case of primary malignant myxoid fibrous histiocytoma of the lung presenting as
a solitary lung nodule in a 61-year-old man is presented. This tumor arose in a patient
with a transitional-cell carcinoma of the urinary bladder and a well differentiated
squamous-cell carcinoma of the larynx. The differential diagnosis between a primary
lung tumor versus a solitary metastasis is difficult and was supported by histological
features and the lack of epithelial properties proved by immunohistochemistry. Tobacco
was the only etiologic factor known in the patient.
Malignant fibrous histiocytoma - Lung neoplasms
