Cavitation of Tumoral Mass after Radiotherapy in a Patient with Pancoast Tumor

Radiation-induced lung diseases are common after radiotherapy of the chest wall or intrathoracic organs. The damage of radiations is ground-glass opacity, consolidation, fibrosis, traction bronchiectasis, and volume loss. Development of pleural fluid or a new mass is rarely seen. A solid lesion was detected in the computed thoracic tomography of 53 year-old male patient. The lesion was at the apex of the right lung, 66x61 mm in size and invading the trachea, esophagus and right subclavian artery. Weekly chemotherapy and radiotherapy were applied concurrently, and the tumor was quickly disappeared, leaving its place to an unexpected cavitary lesion. The case has been reported because of its rarity in the literature