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María José García VellosoServicio de Medicina NuclearClínica Universidad de Navarra
Pitfalls in FDG PET‐CT Imagingof the Chest
Sarajevo (Bosnia & Hercegovina)Wednesday, June 18 2014
10:40-11:20 a.m
• False negative– Tumors with low FDG metabolism:
• Mucinous lung adenocarcinoma• Lepidic pattern adenocarcinoma• Carcinoid Tumor
– Microscopic Disease
• False positive: inflammation/ infection– Tuberculsis, Granulomatosis, Sarcoidosis,
Aspergilosis, Histoplasmosis.– Pneumonía, Abscess– Pleurodesis– Reactive lymphadenopathy
FDG cellular metabolism
Paravertebral Abscess and spondylodiscitis(Staphilococcus Aureus)
SUVmax=8,4
58 year-old man with mass in upper right lobe, destruction of T3-T4
Pneumonia (Pneumocystis carinii and Staphilococcus aureus)
47-year-old woman, Breast Cancer. Neoadjuvant Therapy
SUVmax=5
Tuberculosis
SUVmax=9SUVmax=12
40-year-old man with pulmonary mass and subcarinal lymphadenopathy
Pneumoconiosis62-year-old man, ex-smoker. Asbestos exposure. Respiratory Infection, Lymphadenopaty in thorax.
72-year-old man, 23 mm SPN in LUL
Lepidic pattern adenocarcinoma
SUV=0,95SUV=0,78
08/2013
SUV=0,98
03/2014
3 h. Dual-TimeΔSUV= 22%
1. Lung2. Pleura3. Lymph nodes4. Thymic gland5. Heart and vessels6. Esophagus7. Muscles8. Bones and joints9. Bone marrow
FDG PET-CT. Pitfalls
SUVmax N1=3,4
SUVmax=6,4
SUVmax N2=3,6 EBUS FP
Squamous cell Ca.pT1a N0
71-year-old man.CT: 17 mm SPN in RUL