Increase urine levels of 5-HIAA is associated with which condition?: (A) Liver Cirrhosis, (B) Papillary carcinoma of the Thyroid, (C) Carcinoid tumor, (D) Small cell carcinoma of the lung
Answer is C. CARCINOID TUMOR/ Neuroendocrine tumors Arising from enterochromaffin / neuroendocrine cells of respiratory/ gastrointestinal tracts Resulting in over production of Serotonin .