Hi,
PET scan detects metabolically active areas in the body. It detects the uptake of a tracer labeled with a radionuclide. In many conditions such as infections, inflammations, cancers etc. the affected cells are metabolically more active than normal cells and therefore show increased uptake of the tracer. The intensity of uptake may vary depending on the condition ie it may be more in cancer cells than in inflammations. The uptake is quantified using a parameter called "Standardised uptake value (SUV)" which is a number that depicts the degree of tracer uptake. The SUV may indicate whether the lesion is benign or cancerous. However, the diagnosis needs to be confirmed with an FNAC/biopsy.
All the best!
The doctor has set her up for a PET scan and said depending on the numbers, he would see how to proceed. He said he has an idea of the diagnosis but will not say until PET scan results are in. What does a PET scan tell you?
Hi,
Various differential diagnoses are considered for multiple pulmonary nodules. These include infections, inflammatory conditions such as granulomas, metastasis etc. An FNAC or a biopsy from the lesions is needed to confirm the diagnosis. If metastasis is confirmed on FNAC/Biopsy, the primary tumor may be in the lung or elsewhere and additional investigations may be indicated to discover the primary tumor.
All the best!