This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Medicine
Fasting hyperglycemia is almost always seen in 
Select and explain. 
A. Gastric carcinoma, B. Pheochromocytoma, C. Adrenal tumour, D. Carcinoid tumour
B: Pheochromocytoma
Answer: B: Pheochromocytoma 
Explanation: fasting glucose levels greater than or equal to 7.0 mmol/l, is frequently present in patients with phaeochromocytoma (24% in the present study) and the diabetes is reversed by removal of the tumour(pheochromocytoma). Ref - Harrison20th edition pg 99