Common paraneoplastic syndromes in patients with lung cancer include Hypercalcemia (in patients with squamous cell carcinoma, which results from the tumor producing parathyroid hormone - related protein, or because of extensive bone metastases that cause production of osteoclast-activating factors) Syndrome of inappropriate antidiuretic hormone (SIADH) secretion Finger clubbing with or without hypertrophic pulmonary osteoarthropathy Hypercoagulability with migratory superficial thrombophlebitis (Trousseau syndrome) Myasthenia-like symptoms (Eaton-Lambert syndrome) Cushing syndrome Various other neurologic syndromes Other neurologic syndromes include neuropathies, encephalopathies, encephalitides, myelopathies, and cerebellar disease.