약년자 폐암의 임상적 관찰 = Clinical Study on Lung Cancer in Patients Under Forty Years of Age약년자 폐암의 임상적 관찰

다국어 초록 (Multilingual Abstract)

Carcinoma of the lung is generally considered as a disease of middle age and elderly. But lung cancer is now so prevalent that patients below the age of 40 years must be increaseing. We reviewed the records of 483 lung cancer patients who had been diagnosed in the department of internal medicine of Seoul National University Hospital from March 1984 to February 1986, and the clinical features of the young patients under 40 years were compared with those of the control group patients over 40 years. The results are summarized as follows; 1) Seven percent of 34 cases of 483 patients were belong to the young age group patients (less than 40 years). The youngest patient was 22 years old. 2) Male to female ratios of young group and the control group were 3.25:1, 5.9:1 respectively (p>0.05). 3) The mean duration of symptoms from the onset to the definite diagnosis was 2.7 months in young group and 2.3 months in the control group (p>0.3). 4) The most common initial symptoms in the young group were dyspnea (26.5%), hemoptysis (20.5%), cough or sputum (20.5/), chest pain (8.8%) which were also the most common initial symptoms in the control group. (p>0.25) The incidence of superior vena cava syndrome was significantly higher in the young age group (23.5%) than in the control group (7.1%) (p<0.05). 5) In the young group, the proportion of adenocarcinoma (35%) was significantly higher than that of the control group (18%) (p<0.05). 6) The proportion of smoker was significantly lower in the young age group (13 cases, 38.2%) than in the control group (77.7%). The histological type of 13 smokers of the young group was squamous cell carcinoma in 12 cases and adenocarcinoma in 1 case. 7) All non-small cell lung cancer patients in young group were belong to stage III. 8) Distant metastasis rate of the young group (74%) was significantly higher than that of the control group (54.8%) (p<0.05).