1. A case of “thoracolithiasis”—an unusual isolated calcified lesion in the intrathoracic space;Takiguchi;Nihon Kyobu Shikkan Gakkai Zasshi,1987
2. A case showing a free substance in the thoracic cavity detected during surgery in lung cancer considered to the precursor of the so-called “intrathoracic calculus”;Kuwabara;Nihon Kyobu Shikkan Gakkai Zasshi,1989
3. Thoracolithiasis;Kosaka;Jpn J Thorac Cardiovasc Surg,2000
4. Thoracolithiasis detected during video-assisted thoracoscopic surgery for spontaneous pneumothorax: report of a case;Chujo;Kyobu Geka,2005
5. Surgically removed thoracolithiasis: report of two cases;Iwasaki;Ann Thorac Cardiovasc Surg,2006