[Cancer of the penis: the value of systematic biopsy of the superficial inguinal lymph nodes in clinical N0 stage patients].
1993
: From 1985 to 1991, bilateral surgical biopsy of the superomedial group of superficial inguinal lymph nodes, considered to be the first draining nodes, was performed in 24 patients with clinical stage T1-3 N0 M0 squamous cell carcinoma of the penis at the same time as surgical treatment of the primary. This procedure was technically successful in every case, but no lymph node metastases were detected. As bilateral biopsy was negative in these 24 patients, clinical surveillance was implemented: review every 2 months for 2 years and self-palpation by the patient. Seven patients (29.1%) developed one or more suspicious ilio-inguinal lymph nodes after a mean interval of 11.85 +/- 8.02 months: 1) In 6 patients, bilateral ilio-inguinal lymph node dissection was then performed, confirming the neoplastic nature of the inguinal node metastases without iliac metastases in 3 of these patients. 2) As the remaining patient presented with unilateral iliac node metastases, proven histologically by surgical biopsy, systemic chemotherapy was introduced prior to ipsilateral inguinal lymph node dissection. This finding questions the theory according to which the sentinel superomedial inguinal node constitutes the first draining node and demonstrates the existence of several pathways of lymphatic drainage towards superficial and deep inguinal nodes. This biopsy, which was always negative in our series, is insufficient to guide our therapeutic approach in clinical N0 patients. The decreased complication rate following inguinal lymph node dissection should certainly encourage us to prefer surgery, particularly superficial inguinal lymph node dissection with preservation of the great saphenous vein.
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