<sup>18</sup>F-FDG PET/CT identified 19 patients (sensitivity: 67.9%) in 28 patients with lymph node metastases, and 22 patients (specificity: 88.0%) in 25 patients without lymph node metastases, with an accuracy of 77.4%.
<sup>18</sup>F-FDG PET and PET/CT both have excellent diagnostic performance for detecting lymph node metastasis, including PLN and PALN metastasis, in patients with endometrial cancer preoperatively.
FDG uptake in the lymph nodes was detected in 21 patients (17.9%), and its sensitivity and specificity for lymph node metastasis were 22.7 and 90.5%, respectively.
Data from studies comparing PET/MRI and PET/CT for staging/restaging suggested the superiority of <sup>18</sup>F-FDG PET/MRI for the detection of tumour extension and retropharyngeal lymph node metastases in nasopharyngeal cancer, and for the detection of liver metastases and possibly bone marrow metastases in high-risk BC.
In three of the four studies, cervical ultrasonography did not detect cervical lymph node metastases in addition to a negative finding on F-FDG PET/CT or standalone F-FDG PET and CT.
Metabolic and volume-based parameters of (18F)FDG PET/CT for primary mass and axillary lymph node metastasis in patients with invasive ductal carcinoma: a retrospective analysis in relation to molecular subtype, axillary lymph node metastasis and immunohistochemistry and inflammatory markers.
Our analysis showed a relative increase in the expression of E2F6 in gastric adenocarcinoma with no lymph node metastasis (χ <sup>2</sup>, P = 0.04 and OR, P = 0.08), while overexpression of RhoA and SMUG1 was found more often in the diffuse subtype of gastric adenocarcinoma as compared to the intestinal subtype (χ <sup>2</sup>, P = 0.05, OR, P = 0.08 and χ <sup>2</sup>, P = 0.001, OR, P = 0.009, respectively).
Percentage change of primary tumor on 18F-FDG PET/CT as a prognostic factor for invasive ductal breast cancer with axillary lymph node metastasis: Comparison with MRI.
Prediction of ultrasound guided fine needle aspiration cytology results by FDG PET-CT for lymph node metastases in head and neck squamous cell carcinoma patients.
Predictive value of primary tumor parameters using <sup>18</sup>F-FDG PET/CT for occult lymph node metastasis in breast cancer with clinically negative axillary lymph node.
Preoperative ¹⁸F-FDG PET/CT imaging is useful in predicting the LNM of EC and may help guide pelvic lymphadenectomy to avoid unnecessary pelvic lymphadenectomy in EC patients with low-risk stratification.
Reasons for false negative findings were low <sup>18</sup>F-FDG uptake of local recurrence in one patient and low <sup>18</sup>F-FDG uptake of subcentimetric inguinal lymph node metastases.
Systematic review and meta-analysis of the accuracy of 18F-FDG PET/CT for detection of regional lymph node metastasis in esophageal squamous cell carcinoma.