FDG PET/CT in Type I Glycogen Storage Disease

Area of Science:

• Medical Imaging
• Metabolic Disorders
• Genetics

Background:

• Type I glycogen storage disease (GSD) is a rare, inherited metabolic disorder.
• It results from a deficiency in glucose-6-phosphatase, impacting glucose regulation.
• Type Ib GSD specifically involves a defect in the glucose-6-phosphatase-beta enzyme.

Observation:

• FDG PET imaging was performed on a 33-year-old patient diagnosed with type Ib GSD.
• The imaging aimed to identify characteristic patterns associated with the disease.
• A pulmonary infectious focus was also noted during the scan.

Findings:

• FDG PET revealed a significantly enlarged liver with high global FDG uptake.
• Increased bone marrow activity and splenomegaly with high spleen uptake were observed.
• Diffuse enhancement in muscle FDG uptake was another key finding.

Implications:

• FDG PET imaging can identify specific metabolic and organ-related abnormalities in type Ib GSD.
• These findings highlight the utility of PET scans in diagnosing and monitoring GSD complications.
• Understanding these imaging patterns aids in clinical management and further research into GSD.