Diagnostic value of 18 F-FDG PET/CT in the follow-up of conjunctival melanoma.
PET/CT detects metastatic conjunctival melanoma with 94% overall accuracy in follow-up.
Diagnostic value of 18 F-FDG PET/CT in the follow-up of conjunctival melanoma.
To evaluate the diagnostic performance of 18 F-fluorodeoxyglucose positron emission tomography/computed tomography ( 18 F-FDG PET/CT) in detecting metastatic conjunctival melanoma (conjunctival melanoma).
This retrospective study enrolled 67 patients with histopathologically confirmed conjunctival melanoma who underwent 18 F-FDG PET/CT for follow-up or suspected recurrence.
how often the scan correctly told spread vs. no spread - higher is better
The median interval from surgery to metastasis was 20.3 months (range 1-100 months), with 56.3% (9/16) occurring within the first postoperative year.
Lymph node metastases in conjunctival melanoma predominately occurred in ipsilateral regional nodes (90.1%), with rare bilateral involvement (9.1%).
Standardized uptake value of metastatic lymph nodes, lung metastases, and liver metastases showed positive correlations with lesion size (p < 0.05 for all).
Among metastatic lymph nodes, 53.2% had a short-axis diameter < 10 mm, and 59.1% of bone metastases exhibited no abnormal CT density.
18 F-FDG PET/CT provides high diagnostic accuracy in detecting systemic metastases of conjunctival melanoma during follow-up assessments, particularly for small lymph nodes, early bone metastases, and uncommon sites.