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Increased Pituitary Fluorine-18-Fluorodeoxyglucose Uptake in Patients with Differentiated Thyroid Cancer in Hypothyroidism versus under Recombinant Human Thyroid-Stimulating Hormone Stimulation.
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Service of Endocrinology, Diabetology and Metabolism, Lausanne University Hospital, University of Lausanne, 1011 Lausanne, Switzerland.
Background: F-FDG PET/CT is performed for the assessment of radioactive iodine non-avid disease in patients with DTC. In patients prepared by THW, increased pituitary uptake of F-FDG in the absence of pituitary disease may reflect the physiological activation of pituitary thyrotroph cells by hypothyroidism. This study aimed to compare pituitary F-FDG uptake in patients with DTC under THW vs.
View Article and Find Full Text PDFThymic Imaging Pitfalls and Strategies for Optimized Diagnosis.
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May 2024
From the Division of Diagnostic Imaging (M.K., Z.K., E.K., E.M.M.) and Institute of Pathology (E.O.), The Chaim Sheba Medical Center, Tel Hashomer, 2 Derech Sheba St, Ramat Gan, 5265601, Israel; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (M.K., Z.K., E.O., E.K., E.M.M.); and Department of Thoracic Imaging, University of Texas MD Anderson Cancer Center, Houston, Tex (C.D.S., M.T.T.).
Thymic imaging is challenging because the imaging appearance of a variety of benign and malignant thymic conditions are similar. CT is the most commonly used modality for mediastinal imaging, while MRI and fluorine 18 fluorodeoxyglucose (FDG) PET/CT are helpful when they are tailored to the correct indication. Each of these imaging modalities has limitations and technical pitfalls that may lead to an incorrect diagnosis and mismanagement.
View Article and Find Full Text PDFMusculoskeletal Pitfalls on Molecular Imaging Studies of Oncologic Patients: How to Stay Out of Trouble.
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Department of Radiology, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
An increasing amount of molecular imaging studies are ordered each year for an oncologic population that continues to expand and increase in age. The importance of these studies in dictating further care for oncologic patients underscores the necessity of differentiating benign from malignant findings, particularly for a population in whom incidental findings are common. The aim of this review is to provide pictorial examples of benign musculoskeletal pathologies which may be found on molecular imaging and which may be mistaken for malignant processes.
View Article and Find Full Text PDFFalse Liver Metastasis by Positron Emission Tomography/Computed Tomography Scan after Chemoradiotherapy for Esophageal Cancer-Potential Overstaged Pitfalls of Treatment.
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School of Medicine, National Cheng Kung University, Tainan 701401, Taiwan.
In patients with esophageal cancer undergoing neoadjuvant chemoradiotherapy (nCRT), subsequent restaging with F-18-fluorodeoxyglucose (18F-FDG) positron emission tomography-computed tomography (PET-CT) can reveal the presence of interval metastases, such as liver metastases, in approximately 10% of cases. Nevertheless, it is not uncommon in clinical practice to observe focal FDG uptake in the liver that is not associated with liver metastases but rather with radiation-induced liver injury (RILI), which can result in the overstaging of the disease. Liver radiation damage is also a concern during distal esophageal cancer radiotherapy due to its proximity to the left liver lobe, typically included in the radiation field.
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