[X-ray manifestations of atypical peripheral lung cancer--analysis of 100 cases].

The X-ray findings of 100 cases of atypical peripheral lung cancer as compared with those of their pathological specimens are reported. In the chest film, the lesions showed irregular mass shadows, flakes of infiltrations, scattered nodules, rod-like infiltrations, thickened lung markings and thin-walled cavities, etc. These atypical X-ray changes are due to the intermingling of: (1) the site (2) the growth mode (3) the histologic type. For different lesions, even if the histologic type, position and size are the same, the X-ray findings may still be atypical due to the various growth modes. In addition to the recognition of the typical X-ray features, e.g. lobation, spicula, notch, etc, sputum exfoliative cytology, fibrobronchoscopic examination, puncture biopsy of the lung must also be considered in order to ensure early diagnosis.