<prompt> Secondary hyperparathyroidism is seen in all EXCEPT:Chronic renal failureVitamin D deficiencyMedullary carcinoid syndromeAdenoma  <response>: Adenoma REF: Harrisons 17 ed p. 2388 Causes of secondary hyperparathyroidism Chronic renal failure Malabsorption syndrome Vitamin D deficiency Medullary carcinoma thyroid 