Overview Neoplasm Potential Tumor Products Presenation Small cell lung carcinoma ACTH, ADH, Antibodies against presynaptic Ca2+ channels at neuromuscular junction Cushing's syndrome, SIADH , Lambert-Eaton syndrome Squamous cell lung carcinoma PTH-related peptide, TGF-β, TNF, IL-1 Hypercalcemia Renal cell carcinoma Erythropoietin Polycythemia, Hypercalcemia Thymoma Antibodies against nicotinic acetylcholine receptors at the postsynaptic neuromuscular junction Myasthenia gravis Hemangioblastoma Erythropoietin Polycythemia Intracranial neoplasm ADH SIADH Breast carcinoma PTH-related peptide, TGF-β, TNF, IL-1 Hypercalcemia Leukemias and lymphomas Excess nucleic acid turnover Gout, urate nephropathy