Clinicopathological Studies of Early Lung Cancers in the Hilar Region.

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During the past ten years, the authors treated a total of 15 patients with early squamous lung cancer in the hilar region. Of these 15 patients, five were detected by mass surveys for lung cancer and 10 presented with symptoms related to lung cancer such as fever, cough, sputum or bloody sputum. We report the results of clinicopathological studies of these 15 patients.<BR>Cytologic examination of sputum was performed in five cases detected by mass surveys for lung cancer. Cytologically, 3 patients were diagnosed as suspicious and 2 as positive. Four of 5 patients were roentgenographically diagnosed as "occult" lung cancer. Macroscopic findings of five patients revealed superficial infiltration in 3 cases, nodular tumors in 2 and polypoid tumors in none.<BR>In the 10 symptomatic cases, cytologic examination of sputum was performed in 8 cases. Cytologically, two patients were diagnosed as suspicious and 4 as positive. Only three of 10 patients were roentgenographically diagnosed as "occult" lung cancer. Macroscopic findings of 10 patients revealed superficial infiltration in 2 cases, nodular tumors in 5 and polypoid tumors in 3. None of 3 cases with polypoid tumors were diagnosed as suspicious or positive by cytologic examination of sputum.<BR>We conclude that it is occasionally difficult for cases of polypoid type early lung cancer in the hilar region to be detected by mass survey for lung cancer.
特定非営利活動法人日本肺癌学会の論文