Diaphragm and Laryngeal FDG Uptake With Hiccups.

F-FDG PET/CT study is a well-established investigation in diagnosis, treatment evaluation, and follow-up of malignant tumors. It is very important to know the normal biodistribution and physiologic uptake of F-FDG to prevent it from confusing as malignant disease. This article describes unusual but physiological uptake in the laryngeal and diaphragmatic muscles in a patient presenting as metastatic adenocarcinoma with unknown primary having hiccups.