Transient F-Fluorodeoxyglucose Activity on PET/CT of Herniation Pit in Thyroid Cancer Patient: A Case Report

A herniation pit is a benign bone pit, typically located in the superolateral aspect of the femoral neck or at the anterolateral base of the femoral head. The prevalence of these pits is about 4–5% in the adult population, and are generally incidental findings. Radiological features include small subcortical defects surrounded by a thin sclerotic border (1-3). To the best of our knowledge, there are few case reports on increased 18F-fluorodeoxyglucose (FDG) uptake in herniation pits (4). In this report, we present a unique case of herniation pit showing transient FDG uptake on serial positron emission tomography/computed tomography (PET/CT) images. CASE REPORT