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Query: UMLS:C0242379 (lung cancer)
 71,905 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A prospective study of 125 chemical workers was carried out for ten years to investigate the incidence of lung cancer. Some of the men were exposed to chloromethyl methyl ether containing bis(chloromethyl) ether as an impurity. Bronchogenic carcinoma was markedly increased among them, with a strong dose-response relationship. An unexpected inverse relationship was noted between smoking and the incidence of lung cancer. The neoplasms (all small-cell carcinomas) occurred in relatively young men. Symptoms of chronic bronchitis were reported more often among men exposed to chloromethyl ether, and a dose-response relationship was apparent, with smoking a cofactor. Ventilatory function was not significantly affected by chemical exposure. Periodic screening over the first five years of the study showed a decrease in chronic coughing and an increase in dyspnea while chemical exposure was diminishing.
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PMID:The respiratory effects of chloromethyl methyl ether. 17 60

A questionnaire relating to smoking habits, respirator symptoms, and health attitudes was administered to 10 498 secondary schoolchildren in 1975. The results reported in this paper indicate that children who smoke regularly have a higher prevalence of upper respiratory tract infections and a higher incidence of the respiratory symptoms, cough, phlegm production with a cold, and shortness of breath, compared with non-smokers. Children are aware of the risks of lung cancer when smoking, but less aware of the other more immediate health risks, and this is particularly so in the younger age groups. It is suggested that health education should be directed towards younger children and that more use should be made of the fact that smoking clearly makes them less healthy.
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PMID:Cigarette smoking among secondary schoolchildren in 1975. Prevalence of respiratory symptoms, knowledge of health hazards, and attitudes to smoking and health. 26 90

A new era dawned in 1940 when Batson published the theory that the vertebral venous system plays an important role in cancer carriage. He emphasized that this route comes into play with any natural movement such as coughing. Now, cough is a prominent feature of lung cancer. Therefore, this tumor is optimally positioned for utilizing the vertebral venous route of spread. However, when three major distribution patterns of lung cancer are examined critically, expectations from Batson's theory are not confirmed. If this paradox is recognized and explained, the prospects for solving the mysteries of human cancer metastasis will probably improve.
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PMID:Paradoxical position of vertebral veins in cancer carriage. 59 85

In a prospective study of 6,027 older men screened every six months for ten years by means of chest photofluorograms and questionnaires regarding symptoms, 121 developed lung cancer after the first examination. Eighty-five men with lung cancer had the opportunity to be screened eight times before the tumor was detected by chest x-ray film, but only 33 actually reported that often. These 33 men were compared with matched controls for symptoms before the neoplasm was detected radiologically. The common symptoms of expectoration and chronic cough showed a significant increase in frequency over time in the cases of cancer, while only expectoration showed a slight increase in the controls. Uncommon symptoms more suggestive of lung cancer (hemoptysis and worsening cough) occurred in only four men prior to detection of cancer. Symptoms are seldom useful in the detection of occult lung cancer, but the appearance of expectoration and chronic cough in older male smokers should raise a suspicion of this disease.
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PMID:The Philadelphia Pulmonary Neoplasm Research Project. Symptoms in occult lung cancer. 62 May 58

A patient with inoperable lung cancer developed left-sided laryngeal paralysis. Her dysphonia, difficulty with swallowing, aspiration of secretions, and diminished cough reflex were improved with intracordal polytef injection for the remainder of her life. The foreign body reaction to the implant showed giant cells, few lymphocytes, and no polymorphonuclear leukocytes. This reaction may be described as a bland, chronic type consistent with the age of the implant. No areas of florid, acute reaction were found. Extrusion of part of the polytef through the cricothyroid space was observed. There were no signs of unfavorable tissue reaction, intolerance, or carcinogenicity. In a second case, part of the polytef paste exuded over the thyroid gland and was misinterpreted as a thyroid nodule. Excised 11 months after injection, the foreign body reaction appeared to be of a more acute type.
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PMID:Larynx injected with polytef paste. 77 37

Diverticulosis of the bronchial wall was found in patients not only with, but also without, chronic obstructive lung disease; it appeared to start as submicroscopic depressions and dilatations of the ducts of the bronchial gland on the mucosal surface. Multiple depressions and dilatations fused to form a diverticulum which herniated between and through the smooth-muscle cellular bundles. Rupture of the latter resulted in large diverticula. Cough and a weakened bronchial wall, from whatever causes, likely lead to bronchial diverticulosis. Exaggerated but unequal formations of bronchial diverticula at the sites of dichotomy suggest either that the effect of cough could be different between segments or subsegments, or that there are local differences in connective-tissue atrophy, inflammation, and structural defects. Mucous plugs, macrophages, red blood cells, inhaled particles, and probably carcinogens are accumulated at the bronchial diverticula, which apparently interfere with airway cleansing and also cause continuous local irritation. The relationship between bronchial diverticulosis and small-airway disease or lung cancer needs further clarification.
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PMID:Morphogenesis of human bronchial diverticulum. A scanning electron microscopic study. 81 65

507 cases of lung hamartoma (30 cases reported and 477 reviewed) were analysed. 467 cases of them were of intrapulmonary type, 30 were endobronchial, 8 were multiple and 2 were diffuse. 505 were benign and 2 malignant. The male to female ratio was 1.74:1. The age span was from infant to 67 years with a mean of 41.4 years. 44.3% of the lesions showed no symptoms. The frequently seen symptoms were cough and chest pain. X-ray findings of the intrapulmonary type were characterized by sharply outlined round or oval mass (87.9%), with diameters 3.0 cm (62.1%), lobulation (33.5%), calcification (23.6%). These tumors grew slowly. The average doubling time for 16 cases was 4.2 years. The diagnosis was confirmed in only 18% cases preoperatively. The other cases were misdiagnosed as lung cancer, tuberculoma, metastatic tumors of the lung, etc. The etiological causes, classification, diagnosis, differential diagnosis and treatment of the tumors were discussed.
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PMID:[Lung hamartoma: a report of 30 cases and review of 477 cases]. 130 31

Although blastomycosis is prevalent in the North American continent, it occurs only sporadically in Africa. We describe a 42 yr old patient who complained of intermittent cough and haemoptysis. Clinical findings were strongly suggestive of lung cancer. The diagnosis of pulmonary blastomycosis was made at thoracotomy. This rather unusual disease in our areas caused a considerable delay in securing the diagnosis and we suggest that this infection may be found elsewhere in Africa and the distribution may be wider than has previously been suspected.
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PMID:Blastomycosis in Africa: a new case from Tunisia. 137 39

20 cases of tuberculosis in the superior segment of the lower lobe of the lung were misdiagnosed as lung cancer, pneumonia, bronchiectasis and inflammatory pseudoneoplasm were reported. The final diagnosis were confirmed by fiberoptic bronchoscopy (FOB). The causes of the misdiagnoses were: (1) the hilar mass shadow found on the PA chest film, mistaken for central type lung cancer; (2) the mass shadow found on the lateral chest film, mistaken for peripheral lung cancer; (3) the patients with fever, cough and expectoration accompanied by exudative infiltrative shadow, mistaken for pneumonia; (4) patients with recurrent attacks of hemoptysis but the lesions overshadowed by the spinal column on the lateral chest film were misdiagnosed as bronchiectasis. The author suggested PA and lateral chest films taken simultaneously were needed. The special points, to which should be pay attention during reading the films were listed and noted. FOB examination including TBLB, brushing and BALF for pathologic and AFB determination could be of help to confirm the diagnosis.
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PMID:[The diagnosis of smear negative pulmonary tuberculosis in superior segment of lower lobe]. 139 85

A 23-year-old female was admitted with dyspnea, dry cough, and rhonchi. No abnormalities were detected on chest roentgenogram. Fiber-bronchoscopy revealed a polypoid lesion with necrotic material occluding the left main bronchus. The pathological diagnosis of the biopsied material was low grade mucoepidermoid carcinoma. Following tumor reduction by Nd-YAG laser, it was clear that the primary lesion originated from the left upper bronchus. Sleeve lobectomy was performed, and the tumor was proved to be early lung cancer of hilar type with extension limited to the bronchial wall.
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PMID:[A case of early mucoepidermoid carcinoma arising from the left upper bronchus and presenting the flow-volume curve as a manner of extra-thoracic airway obstruction]. 143 29


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