This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nuclear Medicine, Subject name: Radiology
Fluorodeoxyglucose-positron emission tomography (FDG-PET) does not detect which of the following? 
Select and explain. 
A. Typical carcinoid, B. Atypical carcinoid, C. Small cell neuroendocrine tumor, D. Large cell neuroendocrine tumor
A: Typical carcinoid
Answer: A: Typical carcinoid 
Explanation: ANS. ATumors which have low metabolic rate is negative on FDG-PET.Examples of low metabolic tumors are:1. Bronchoalveolar carcinoma2. Carcinoid tumors.But the question had both typical and atypical carcinoid.Typical carcinoid has less number of mitosis than atypical carcinoid, hence, it has less metabolic rate than atypical carcinoid. So, typical carcinoid is the answer.