False-Positive 18F-FDG and 18F-Fluorothymidine Uptake in a Patient With Round Atelectasis

Abstract

A 64-year-old man with no significant medical history demonstrated a right lower lobe opacity on routine chest radiography. Transaxial CT showed a round, well-circumscribed, pleural mass with comet-tail sign in the right lower lobe and pleural thickening with pleural effusion. 18F-FDG PET/CT showed hypermetabolic activity in the mass (SUVmax 9.61). 18F-fluorothymidine PET/CT also showed mild increased uptake in the mass (SUVmax 3.26). Lung biopsy and follow-up CT scan revealed round atelectasis.

Análise Do Padrão De Resistência Antimicrobiana E Dos Fatores De Risco Das Infecções Estafilocócicas No Período Neonatal Em Um Hospital De Referência Em Pediatria: Uma Coorte Retrospectiva

“…En un estudio de 67 pacientes que se cursaban su quinta semana de radioterapia fueron sometidos a un scanner con PET/CT en la cual se logró constatar su precisión y fiabilidad para delimitar tumores y excluir anomalías que no son de carácter tumoral como atelectasias (Ganem et al, 2018). El uso de 18F -FDG la captación tiene notables diferencias (Gorospe et al, 2018), de acuerdo a un estudio en de 21 pacientes (13 hombres y 8 mujeres) que presentaban atelectasia en TC la intensidad de captación de 18F -FDG fue menor en pacientes con neoplasias malignas, pero se mantenía mayor que en un pulmón normal (Norikane et al, 2020).…”

Imaging Criteria in the Diagnosis of Atelectasis

“…The use of 18F -FDG uptake has notable differences (Gorospe et al, 2018), according to a study in 21 patients (13 men and 8 women) who presented atelectasis on CT, the intensity of 18F -FDG uptake was lower in patients with malignancies, but remained higher than in a normal lung (Norikane et al, 2020).…”