Journal of Ultrasound in Medicine, Vol 12, Issue 5 255-258, Copyright © 1993 by American Institute of Ultrasound in Medicine

JOURNAL ARTICLE

Pretreatment sonographic evaluation of inguinal lymph nodes in patients with vulvar malignancy

P. J. Makela, A. Leminen, M. Kaariainen and P. Lehtovirta
Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Finland.

The state of the inguinal nodes is a major prognostic factor in vulvar carcinoma. Because of new surgical trends with selective inguinal lymphadenectomy, the preoperative evaluation of inguinal lymph nodes is essential for adequate treatment of vulvar carcinoma. To evaluate the adequacy of clinical examination and high-frequency transducer sonography in detecting metastatic inguinal lymph nodes, we studied 25 patients with vulvar malignancy who underwent operation. Histopathologically proved lymph node metastases were found in 11 (22%) of 50 inguinal areas studied. All of the suspected metastases were in patients with stage III-IV disease. The inguinal lymph node metastases were found by sonography in nine (82%), by preoperative palpation in one (9%), and by operative palpation in six (55%) of 11 areas. The difference between sonography and palpation was statistically significant (P < 0.01). The sensitivity and specificity were 82% and 87% for sonography, 9% and 100% for preoperative palpation, and 55% and 90% for operative palpation.

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