A 43-year-old female asked:
Ct scan from 1 month ago showed my lung nodule grew 1 mm. will a pet w/ ct tell me if its cancer?
2 doctor answers • 3 doctors weighed in
Dr. Steven Hebertanswered
Pathology 31 years experience
PET scan: Tumors generally have a higher metabolic rate and a pet ct make use of this. Tumor usually lights up on a pet scan. If the tumor nodule is very small it will likely be missed on a pet scan.
4.3k viewsReviewed >2 years ago
Dr. Barry Sheppardanswered
Thoracic Surgery 36 years experience
No: A PET scan looks at tissue uptake of radiolabelled sugar. Cancers and infections take "light up" on PET/CT scans whereas scar tissue does not. A biopsy is needed to tell if a nodule is a cancer. A PET/CT may indicate the need for a biopsy if it is positive.
169 viewsAnswered >2 years ago
Last updated Jun 3, 2019
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