Publications by authors named "Motohiro K"

Aims: Traditional serrated adenoma (TSA) is a rare but distinct type of colorectal polyp. Our previous study showed that PTPRK-RSPO3 fusions are frequent and characteristic genetic alterations in TSAs. This study aimed to characterize comprehensively the prevalence and variability of RSPO fusions in colorectal TSAs.

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A few reports have suggested the possible association between lung cancer and bullous disease. We report a surgical case of lung adenocarcinoma located in close proximity to pulmonary bullae. A 48-year-old nonsmoker, asymptomatic male was found to have a pulmonary tumor mass and giant bulla in the right lung.

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A rare case of benign asbestos pleural effusion associated with aspergilloma is reported. A chest radiograph of a 75-year-old Japanese man who was admitted with right chest pain showed a right pleural effusion and nodular shadows in the right apex and left middle lung field. Thoracocentesis revealed an exudate with atypical mesothelial cells.

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We report two cases of diffuse malignant pleural mesothelioma occurring almost simultaneously in one family. Patient 1 was a 42-year-old Japanese man who had worked as an electrical engineer for 25 years. Patient 2, his mother, was 69 years old.

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A case with benign cystic teratoma growing in the thoracic cavity, which is rare in Japan, in a 49-year-old woman is reported. She complained a chest pain suddenly. Chest X-ray examination revealed an abnormal shadow and pleural effusion in the right lung field.

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Congenital tracheoesophageal fistula without atresia can persist and remain undetected without symptoms until adulthood. We have recently encountered such a rare case and also conducted a review of the literature. Symptoms are commonly present during infancy, but occasionally patients do not develop symptoms until adulthood.

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A case with chondrosarcoma of rib, which is relatively uncommon in Japan, in a 61-year-old man is reported. Chest X-ray examination revealed an abnormal shadow in the right of the chest wall. Chest CT scan and MRI disclosed the tumor to have been arosen from the right 5th rib protruding into the thoracic cavity.

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A fibrolipomatous hamartoma of the lung in a 57-year-old Japanese man is reported. Computed tomography revealed an abnormal mass with fatty and soft tissue densities in the upper portion of the right lung, indicating a liposarcoma. Upon resection, the tumor was found to consist of a 7.

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The patient was a 65-year-old woman who was admitted for chest oppression and back pain. Coronary angiography showed an abnormal artery originating from the right coronary artery with the formation of two saccular aneurysms, and draining into the pulmonary artery. The abnormal artery and the aneurysms were resected, and the pulmonary artery was sutured under cardiopulmonary bypass, successfully.

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Glomus tumor of the trachea which developed in a 51-year-old man was reported. He experienced frequent episodes of respiratory infections and hemoptosis for 9 months. Bronchofiberscopic study demonstrated a polypoid tumor in the upper trachea.

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We experienced 4 cases of thoracoabdominal and suprarenal abdominal aortic aneurysm in the last 6 months. There were 3 males and 1 female ranging in age from 43 to 66 years, 2 with an etiology of aortitis syndrome, 1 with non-specific inflammation and 1 with atherosclerosis. In all cases the modified Hardy procedure was employed.

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Because of the increasing longevity of man, more elderly patients of abdominal aortic aneurysm are being considered for surgical treatment. It is the purpose of this report to provide the data based on analysis of 23 patients, 70 years of age or older, compared with 26 patients, under 70 years of age, seen at our institution during the last 8-year period so that a rational decision can be made regarding abdominal aortic aneurysm operation in the elderly. Operation in the elderly group (n = 17) and in the younger group (n = 25) was associated with 5.

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