Paraneoplastic syndrome refers to signs and symptoms that may occur in presence of cancer. The signs and symptoms do not arise in the primary organ of the cancer, but in more distal areas. Common paraneoplastic signs and symptoms of bronchial CA are: - hypercalcemia - SIADH - trousseau's syndrome - cushing's syndrome Reference: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4127595/ Image via: http://www.ajnr.org/content/early/2020/10/22/ajnr.A6815