Surgical treatment of primary malignant chest wall tumours.

Abstract

Primary malignant tumours of the bony chest wall are uncommon and data concerning treatment and results are sparse. To assess the results of surgical resection and chest wall reconstruction we reviewed our experience with primary malignant chest wall tumours treated since 1958. Of the 49 lesions, 42 were found in the ribs and the remaining 7 in the sternum. These included chondrosarcomas [22], solitary plasmacytoma [18], Ewing's tumours [7], Askin's tumour [1] and Desmoid tumour [1]. Skeletal reconstruction was performed in 36 of the 49 patients. Marlex mesh alone was used in 17 patients. Since 1972, a sandwich of two layers of Marlex mesh with a filler of methyl methacrylate was utilised [19] successfully, producing better functional and cosmetic results. Primary soft tissue closure was possible in all but 8 cases in whom latissimus dorsi myocutaneous flaps were used. Bilaterally, partially transposed pectoralis major muscle was used to cover upper sternal defects in 4 cases. All but 1 patient had an uneventful post-operative recovery none requiring ventilatory support. Overall survival at 5 and 10 years was 68%. The differential figures for 10-year survival were for chondrosarcoma 67%, Ewing's sarcoma 43%, and solitary plasmacytoma 59%. These were the results of radical en-bloc excisions. The patient with Desmoid tumour is alive at 5 years, following incomplete initial resection and the patient with Askin's tumour survived for 3 years. Radical en-bloc excision remains the treatment of choice in all primary malignant chest wall neoplasms except large solitary plasmacytomas where incisional biopsy followed by irradiation appears to be the method of preference. In Ewing's and Askin's tumours, additional chemotherapy and radiotherapy have to be used. The extent of surgical excision should only be limited by the amount of tissue necessary to remove for adequate malignant tissue clearance, since even large defects can be reconstructed with little functional disturbance.