Genetic Homology between Bacteria Isolated from Pulmonary Abscesses or Pyothorax and Bacteria from the Oral Cavity.

Pulmonary abscesses and pyothorax are bacterial infections believed to be caused primarily by oral microbes. However, past reports addressing such infections have not provided genetic evidence and lack accuracy, as they used samples that had passed through the oral cavity. The aim of this study was to determine whether genetically identical bacterial strains exist in both the oral microbiota and pus specimens that were obtained percutaneously from pulmonary abscesses and pyothorax, without oral contamination.

[A case of primary lung cancer with swollen mediastinal lymph nodes due to pre-existing sarcoidosis].

A 69-year-old man, who had been followed up for sarcoidosis at another hospital from 10 years previously, was referred to our hospital because of a new lesion in the left upper lobe. A chest CT scan revealed a nodular lesion at the orifice of the left B3b and mediastinal lymphadenopathy. Bronchoscopic biopsy established a diagnosis of squamous cell carcinoma.

[A case of ruptured bronchial artery aneurysm with hemothorax and mediastinal hematoma].

We encountered a case of ruptured bronchial artery aneurysm, which presented with hemothorax and mediastinal hematoma. The patient was a 65-year-old man. He was admitted because of a sudden onset of right chest pain.

[A case of severe radiation pneumonitis--a trial of plasma exchange].

A 77-year-old man underwent radiotherapy for the squamous cell carcinoma of the right lung. Two months after the 60Gy/30fr irradiation was completed, he complained of dyspnea and his chest X-ray showed ground glass opacities and reticular shadows in both lung fields. Severe radiation pneumonitis was diagnosed.