PET/CT Normal Variants and Pitfalls in Pediatric Disorders.

Area of Science:

• Radiology
• Nuclear Medicine
• Pediatric Imaging

Background:

• 18F-Fluoro-deoxyglucose positron emission computed tomography (18F-FDG PET CT) is widely used in oncology.
• FDG uptake is not exclusive to tumors and can occur in benign conditions like infection and inflammation.
• Pediatric PET CT imaging presents unique challenges in protocoling and interpretation.

Purpose of the Study:

• To highlight the non-specificity of 18F-FDG PET CT.
• To emphasize the importance of recognizing benign conditions, especially in pediatric patients.
• To guide radiologists and nuclear medicine physicians in accurate interpretation and avoiding false positives.

Main Methods:

• Review of 18F-FDG PET CT principles and applications.
• Discussion of physiological variants and common benign conditions causing FDG uptake.
• Emphasis on pediatric-specific considerations for imaging protocols and interpretation.

Main Results:

• 18F-FDG PET CT demonstrates uptake in various benign pediatric conditions, mimicking malignancy.
• Technical challenges in pediatric imaging can lead to suboptimal studies.
• Knowledge of physiological variants and benign mimics is essential for accurate diagnosis.

Conclusions:

• Accurate interpretation of 18F-FDG PET CT in children requires awareness of benign mimics.
• Optimized protocols and preparation are vital for pediatric PET CT quality.
• Familiarity with pitfalls prevents misdiagnosis and unnecessary patient anxiety.