Characteristics of MRI for lymph node metastases in cervical cancer

Objective To explore the distribution characteristics and the sizes of lymph nodes detected by MRI in patients with cervical cancer.Methods Fifty-four patients with cervical cancer were recorded the MRI characteristics of lymph nodes by PACS.The sensitivity and specificity of MRI for lymph node metastases in cervical cancer were evaluated. Results The metastases rate in obturator lymph node was the highest(88%in the left side and 90%in the right side). The internal iliac lymph nodes took the second place(85%in the left side and 88%in the right side).The metastases rate was 79%in the left deep inguinal lymph nodes and 77%in the right side,45%in the left external iliac lymph nodes and 43%in the right side,and was 31%in the left common iliac lymph nodes and 17%in the right side.Percentage of lymph nodes 5to 10mm in diameter was 51.2%in metastases group.According to ROCanalysis,when lymph node was 8mm in diameter,the sensitivity and specificity were 49.5%and 69.6%,and AUCwas 0.669.Conclusions The metastasized lymph nodes by MRI detection are mainly located in the obturator and internal iliac lymph nodes,followed by the deep inguinal and external iliac lymph nodes lymph nodes.The diameter of lymph nodes could not be applied to estimate whether or not a metastasis develops.