Failure in the detection of the sentinel lymph node with a combined technique of radioactive tracer and blue dye in a patient with cancer of the vulva and a single positive lymph node

Background. In early stage vulvar cancer, the sentinel lymph node procedure with a radioactive tracer appears to be a promising new diagnostic tool to predict lymph node status. No detection failures have been published so far in vulvar cancer. We recently experienced failure in the detection of the sentinel lymph node in a patient with a positive lymph node.Case. A 75-year-old patient with a clinical T2N0M0 squamous cell carcinoma replacing the clitoris underwent a sentinel node procedure. A sentinel node was detected only at one groin. An exploration of the other groin showed a positive lymph node totally replaced by tumor.Conclusion. In the case we present, stasis of the lymph flow might be the leading cause of the failure of the sentinel lymph node procedure. (C) 2004 Elsevier Inc. All rights reserved.