Kiyoshi Yoshizawa

Microscopic analysis of chromium accumulation in the bronchi and lung of chromate workers.

It is known that chromium is an inhaled carcinogen and an important risk factor in the development of lung carcinoma.

Cystic Pulmonary Hamartoma

A case of cystic pulmonary hamartoma is reported and the literature is reviewed. According to the literature, only 6 well-documented cases have been previously reported, and all the patients including our patient fared well after operation.

Postpneumonectomy space control with SF6

Four cases of patients whose postpneumonectomy spaces had been controlled with SF6 were examined at autopsy, which showed that the spaces were entirely covered with thickening parietal pleura and that the mediastinum had moderate elasticity. Histologically, fibrotic changes with minimum inflammation patterns were seen in the pleura. We consider that mediastinal elasticity becomes a factor in improving pulmonary function and the above observations confirmed that SF6 prevents the proliferative reaction of postpneumonectomy spaces without any toxicity.

Indications for Thoracoscopic Surgery in place of Open Lung Biopsy.

胸腔鏡下手術は, Video-Assisted Thoracic Surgery (VATS) として, 最近急速に普及しつつある. 適応疾患は, 自然気胸や嚢胞性疾患, 肺腫瘍, 胸膜及び胸壁病変, 縦隔病変など, 広範囲にわたっている. しかし, 個々の症例の適応決定には慎重であらねばならない.そこで我々は, 当科において, 最近10年間に行った呼吸器外科手術症例を検討し, 現在であればVATSが可能であったと考えられる症例が, どの程度存在したかについて考察を行った. その結果, 画像診断上, VATSの適応症例は, 開胸肺生検例の73%に存在し, VATSのみでその目的を完遂し得たであろう症例は, そのうちの約半数であった. 現在までに施行したVATS症例と比較検討し, 報告する.