We have made the histological studies on the comparisons of the autopsy cases of chronic bronchitis, the biopsy samples taken under bronchoscopy and the experimental bronchitis. In the preparation of the autopsy cases, hypertrophy as well as hyperplasia of mucous glands and the feature of bronchiolitis accompanied by the plasma cell infiltration were observed at any height of the bronchial tract. Around the mucous glands, the hyperplasia of the nerve fibres was also found by silver impregnation, which attached with the dilated blood vessels. From the histological view of the biopsy samples, we have classified the severity of chronic bronchitis into 3 grades. The close relationships were found between the histological graders and the bronchoscopic appearances as well as the course of the disease.
The histological appearances of the experimental bronchitis gave some resemblances with the biopsy and autopsy samples. From the study, it was suggested that some immunological factors were contributive to the pathogenesis of chronic bronchitis. By the immunofluorescent study of the biopsy samples, it was found that IgA immunoglobulin located abundantly in the plasma cells in the lamina propria. The abundant existence of IgA in the sputa of chronic bronchitis was also observed.

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It is a purpose of this study to elucidate the dynamics of the esophageal motility by analizing the intraluminal pressure curve in the esophagus by means of measurement of the pressure and fluorocinematography.
The intraluminal pressure was measured by open tipped method and fluorocinematography was performed with an image intensifier. Twenty-three normal individuals were studied, and the films of fluorocinematography were projected and enlarged to be compaired with the intraluminal pressure curve.
By this method, it was studied that the time relation of the change of the intraluminal pressure was analized according to the time of arrival and passing of contrast medium in a hole where the pressure was added.

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The esophagoscopic examinations were tried on the sixty-five cases (male; fifty-four, female; eleven) of the esophageal cancer. And the findings were summarized with the rules to treat the esophageal cancer.
The situations of the tumors were divided into the cervical (Ce), upper (Iu), middle (Im), under (Ei) thoracic and the abdominal esophagus (Ea). The female is predominant in the cervical esophagus, and the male is in the thoracic.
The tumors located in the posterior wall of the esophagus in the vast majority of the cases of the cervical, middle and under thoracic esophageal cancer.
The macroscopic findings of the mucous membrane were classified to the superficial, protuberance, excavation, infiltrative protuberance, infiltrative excavation and stricture of the all round wall. And the infiltrative types were considered to be the advanced cases, and observed mostly in the middle thoracic esophagus.
Histopathologicaly just three cases of the abdominal esophageal cancer were diagnosed to the adenocarcinoma, and all of the other were the squamous cell carcinoma. The fourteen cases had to be biopsied repeatedly.
The X-ray pictures were divided into the superficial, tumor-like, sawteeth-like, funnel-shaped and spiral. They were compared with the esophagoscopic findings. The intimate relationships between these two findings could not be detected.

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A 66 years old female with a chief complaint of cough and sputum with hemoptysis was noted to have an enlarging hilar mass in her right lung, similar to a carcinoma, without any evidence of parenchymal disease. At bronchoscopy the right bronchial mucosa was noted to be highly vascular, edematous with localized white tenecious secretion.
The bronchial lumen was distorted and stenosed but without evidence of malignancy. Although highly vascular, the mucosa was not friable and throughout the examination there was no bleeding.
Multiple cultures were non specific. A mucosal biopsy and smear showed acute and chronic inflammatory changes.
The patient was started on vigorous antibiotic therapy.
Radiographic follow up over a seven month period showed slow progressi ve diminution in the size of the mass with marked clinical improvement. This therefore represents a case of a malignant appearing hilar mass which was caused by an acute and chronic inflammatory process.

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