Abstract
The aim of this study was to assess the importance of paraneoplastic syndromes as an early sign of non-small cell lung cancer (NSCLC). A procedure for searching paraneoplastic syndromes, based on 40 years of reports in the literature, was established and the prevalence of paraneoplastic syndromes estimated in 68 patients with resectable NSCLC. Stages I and II were considered eligible for surgery straight away. Patients in Stage IIIA underwent surgery if partially or completely responsive to three courses of neo-adjuvant chemotherapy. Paraneoplastic syndromes were assessed and confirmed in nine patients (13%). Motor-sensory neuropathy, arthritis and arthralgias to the knees, periarthritis to the shoulder, hypertrophic osteopathy, clubbing, pruritus were observed. Only three patients with painful osteoarthropathies were diagnosed with NSCLC by tracing their paraneoplastic syndrome, whereas most of them (36/68) were diagnosed incidentally through a chest radiograph taken for tumour-unrelated symptoms. A careful research of paraneoplastic syndromes in high risk patients may guide the doctor to a resectable NSCLC diagnosis. Recent onset arthritis and arthralgias, which cannot be explained otherwise, should be considered to be early clues of lung cancer.
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