<prompt> A 70 year old male known case of a certain malignancy presents with elevated erythropoietin levels and PCV of 52. Most likely tumour is -Renal Cell CarcinomaMedullary thyroid carcinomaGastric CarcinomaColorectal CA  <response>: Ans. is a i.e., Renal Cell Carcinoma Paraneoplastic syndromes in RCCParaneoplastic syndormesi Fever of unknown originii Anemiaiii Erythrocytosis dt secretion of erythropoietin by RCC but anemia is a more common findingiv Hypertensionv Abnormal liver function Stauffers syndrome ie non metastatic hepatic dysfunctionvi Hypercalcemiavii Neuromyopathyviii Amyloidosisix Increased ESR MC paraneoplastic syndromex Dysfibrogenemiaxi Galactorrhoeaxii Feminization and masculanization 