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Passoni, Niccolò M., M.D; Suardi, Nazareno, M.D; Abdollah, Firas, M.D; Picchio, Maria, M.D; Giovacchini, Giampiero, M.D; Messa, Cristina, M.D; Freschi, Massimo, M.D; Montorsi, Francesco, M.D; Briganti, Alberto, M.D
Urologic oncology, 2014, January 2014, 2014-Jan, 2014-01-00, 20140101, Letnik: 32, Številka: 1Journal Article
Abstract Objective Positron emission tomography (PET)/computed tomography (CT) has been shown to be a valid tool in detecting lymph node (LN) metastases in men with biochemical recurrence after radical prostatectomy. We assessed its validity in detecting a single positive LN at pathologic examination in regard to an increasing interest in lesion-targeted salvage therapies. Methods and materials We included 46 patients with biochemical recurrence after radical prostatectomy and a single positive spot at 11 Ccholine PET/CT who underwent pelvic or pelvic and retroperitoneal LN dissection. The ability of 11 Ccholine PET/CT in identifying the exact positive LN was assessed with the positive predictive value (PPV) in the overall population and according to androgen deprivation therapy, prostate-specific antigen value, and site of PET/CT positivity. Results Overall, 30 patients (65%) had positive LNs at pathologic examination. Of these, only 16 (35%) had pathologically confirmed metastases in the same lymphatic region and 11 (24%) had involvement of 1 single LN. Conversely, 28 patients had positive LNs in other areas and 8 had no evidence of metastases. The overall PPV of PET/CT was 34.8% and 23.9% when exact concordance was defined according to the lymphatic landing site and single positive LN, respectively. The PPV ranged from 33.3% to 44.4% and from 17.9% to 28.6%, in men with and without androgen deprivation therapy, respectively. Conclusions The PPV 11 Ccholine of PET/CT in correctly identifying patients with a single positive LN at salvage LN dissection is poor (24%). Therefore, extensive salvage treatment approaches are needed to maximize the chance of cure.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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