Metastatic lung tumours rarely lead to development of pneumothorax, and\nno case of bilateral secondary pneumothorax due to lung metastases arising\nfrom tongue cancer has been reported. Here, we report a case of a patient\nwith tongue cancer with lung metastases complicated by bilateral secondary\npneumothorax soon after the completion of concurrent chemoradiotherapy.\nA 39-year-old man with cervical lymph node metastases originating from\npT2N0M0 tongue cancer underwent neck dissection and postoperative concurrent\nchemoradiotherapy. Shortly after the completion of chemoradiotherapy,\nhe developed bilateral secondary pneumothorax. Subsequently, he underwent\npartial lung resection for the pulmonary fistulae for diagnostic and\ntherapeutic purposes; nodular lesions found in both the lungs. The diagnosis\nof secondary pneumothorax was based on histopathological findings. Although\nall pulmonary fistulae disappeared after partial lung resection, he died\nof the primary disease despite our best efforts to control the metastatic pulmonary\nlesions.
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