Spontaneous pneumothorax complicating chemotherapy for metastatic seminoma. A case report and a review of the literature

BACKGROUND: Spontaneous pneumothorax complicating chemotherapy has been reported mainly in metastatic sarcoma, particularly of the osteogenic type. The main factor in the etiology of spontaneous pneumothorax could be related to tumor lysis and/or rapid rupture of chemosensitive peripheral or subpleural metastasis into the pleural cavity, thus leading to a bronchopleural fistula. METHODS AND RESULTS: A 49-year-old patient in whom spontaneous pneumothorax developed after successful chemotherapy for metastatic seminoma is described. On chest tube drainage, the lung reexpanded rapidly and the patient became clinically and radiographically symptom free. CONCLUSION: To the authors' knowledge, this is only the second case of spontaneous pneumothorax complicating chemotherapy-induced rapid regression of lung and mediastinal metastases in patients with seminoma. Spontaneous pneumothorax should be included in the spectrum of chemotherapy-related side effects in chemosensitive solid tumors with lung metastases.