The positive outcome of lung cancer treatment is strongly related to the earliness of the\ndiagnosis. Thus, there is a strong requirement for technologies that could provide an early detection\nof cancer. The concept of early diagnosis is immediately extended to large population screening,\nand then, it is strongly related to non-invasiveness and low cost. Sensor technology takes advantage\nof the microelectronics revolution, and then, it promises to develop devices sufficiently sensitive to\ndetect lung cancer biomarkers. A number of biosensors for the detection of cancer-related proteins\nhave been demonstrated in recent years. At the same time, the interest is growing towards the\nanalysis of volatile metabolites that could be measured directly from the breath. In this paper, a\nreview of the state-of-the-art of biosensors and volatile compound sensors is presented.
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