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  • Title: Long-term results of brachytherapy for carcinoma of the penis confined to the glans (N- or NX).
    Author: de Crevoisier R, Slimane K, Sanfilippo N, Bossi A, Albano M, Dumas I, Wibault P, Fizazi K, Gerbaulet A, Haie-Meder C.
    Journal: Int J Radiat Oncol Biol Phys; 2009 Jul 15; 74(4):1150-6. PubMed ID: 19395183.
    Abstract:
    PURPOSE: To analyze the results of exclusive interstitial low-dose-rate brachytherapy (BT) for squamous cell carcinoma (SCC) of the penis, strictly confined to the glans. METHODS AND MATERIALS: A total of 144 patients with SSC of the glans penis were treated with BT. Inguinal nodal dissection was performed in 19% of patients (all N-). After circumcision, BT was performed using the hypodermic needle technique. Median iridium length per patients was 24 cm (range, 4-108) and median dose was 65 Gy (range, 37-75). Median treated volume was 22 cm(3) (range, 5-110) and median reference isodose rate was 0.4 Gy/h (range, 0.2-1.2). RESULTS: Median follow-up was 5.7 years (range, 0.5-29). The 10-year penile recurrence, inguinal lymph node recurrence, and inguinal nodal metastasis rates were: 20% (CI 95%, 11-29), 11% (CI 95%, 5-17), and 6% (CI 95%, 2-10), respectively. After salvage treatment, 86% patients with local failure were in a complete remission at last follow-up. The 10-year probability of avoiding penile surgery (for complication or local recurrence) was 72% (CI 95%, 62-82). The 10-year cancer-specific survival rate was 92% (CI 95%, 87-97). Diameter of tumor significantly increased the risk of recurrence (p = 0.02). The 10-year painful ulceration and stenosis risk rates were: 26% (CI 95%, 17-35) and 29% (CI 95%, 18-40), respectively. Seven patients required excision for necrosis. Treated volume and reference isodose rate significantly increased the risk of complications. CONCLUSION: BT is an effective conservative treatment for SCC confined to the glans. Salvage local treatment is effective. Dose rate should be limited to decrease toxicity.
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