title: [Pulmonary malignant lymphoma--a case report].
abstract: A case of pulmonary malignant lymphoma is reported. A 65-year-old woman had no complaint. But chest roentgenography and CT revealed an infiltrating shadow with marked airbronchogram in the left S3. TBLB revealed marked subepithelial lymphocytic infiltration of the bronchial wall. Because the shadow had gradually enlarged, malignancy was suspected and lobectomy was performed. The resected specimen showed a 60 X 56 X 30 mm greyish-yellow, medullary tumor with intrapulmonary metastasis. Microscopically, well-differentiated small lymphocytic tumor cells severely infiltrated the pulmonary parenchyma, pleura and bronchial cartilage. There was no lymph node metastasis or extrapulmonary involvement. Immunohistochemical study proved the monoclonality of the K chain. She was treated with chemotherapy postoperatively.
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008223:Lymphoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D011013:Pneumonectomy; D013902:Radiography, Thoracic