Ranasinha K W, Uragoda C G
Br J Ind Med. 1972 Apr;29(2):178-83. doi: 10.1136/oem.29.2.178.
178-183. In this survey, which is the first of its kind in the graphite industry, 344 workers in a large mine in Ceylon were investigated for pulmonary lesions; 22·7% of them had radiographic abnormalities, which included small rounded and irregular opacities, large opacities, and significant enlargement of hilar shadows. They had worked considerably longer in the industry and were, on average, older than the rest. Only 19·2% of the affected workers had respiratory symptoms, of which dyspnoea and cough were the most frequent. Digital clubbing was seen in 21·9%. In an age and sex matched control group, comprising 327 persons from a neighbouring village, only 8 (2·4%) showed radiographic abnormalities. Graphite pneumoconiosis closely resembles coal miners' pneumoconiosis in many respects. It does not appear to be a pure silicosis, neither could it be considered a true carbon pneumoconiosis. It is likely that massive fibrosis is associated with tuberculous infection.
178 - 183。在本次石墨行业首次开展的此类调查中，对锡兰一座大型矿山的344名工人进行了肺部病变调查；其中22.7%的工人有影像学异常，包括小圆形和不规则阴影、大阴影以及肺门阴影显著增大。他们在该行业工作的时间长得多，平均年龄也比其他人更大。受影响的工人中只有19.2%有呼吸道症状，其中呼吸困难和咳嗽最为常见。21.9%的人出现杵状指。在一个由邻村327人组成的年龄和性别匹配的对照组中，只有8人（2.4%）有影像学异常。石墨尘肺在许多方面与煤矿工人尘肺极为相似。它似乎不是单纯的矽肺，也不能被视为真正的碳尘肺。大块纤维化可能与结核感染有关。
