In:
Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 30, No. 15_suppl ( 2012-05-20), p. 8535-8535
Kurzfassung:
8535 Background: US-guided-FNAC prior to surgical SN staging is emerging as a possible cost-effective addition to the staging of melanoma patients (pts). Formerly, sensitivity (sens) rates of lymph node US in melanoma were disappointing (20–40%). The introduction of the Berlin Morphology Criteria has significantly improved sens rates for US-FNAC (J Clin Oncol 2010;28(5):847-52). The aim of the current study was to report on 1000 patients the sens, specificity (spec), positive (PPV) and negative (NPV) predictive value rates of US-FNAC from our prospective database with prolonged follow-up. Methods: Since 2001, 〉 1000 stage I / II consecutive melanoma pts have undergone US-FNAC prior to SN. All patients underwent lymphoscintigraphy. Peripheral Perfusion (PP), Loss of Central Echoes (LCE), Balloon Shaped (BS) were the Berlin Morphology Criteria which were registered. FNAC was performed in case of presence of any of these factors. SN tumor burden was measured according to the Rotterdam Criteria. All patients underwent SN or LND in case of positive FNAC. Results: Mean/median Breslow thickness was 2.56 / 1.57 mm (0.2 – 44 mm).Mean/median follow-up was 39 / 32 months (0 – 115). Ulceration was present in 24 %. SN positivity rates were 20 % (202 / 1000). Sens was 51 %. Spec, PPV and NPV were 99%, 91% and 89%. Sensitivity was highest for T4 tumors (77%). PP, LCE, BS had sens of 69%, 24%, 25%. SN tumor burden 〉 1 mm in largest diameter according to the Rotterdam Criteria was identified by US-FNAC in 86%. Threshold for positive FNAC was 0.4 mm in maximum diameter. Conclusions: The new criterion of Periferal Perfusion is of key importance to achieve the high sensitivity of US-FNAC according to the Berlin Morphology Criteria (J Clin Oncol 2010; 28:847-852) to identify lymph node metastases. Especially for T4 patients and in patients with advanced SN tumor burden it can reduce significantly the need for surgical SN staging. The EORTC Melanoma Group will launch the prospective validation study, USE FNAC, in 2012.
Materialart:
Online-Ressource
ISSN:
0732-183X
,
1527-7755
DOI:
10.1200/jco.2012.30.15_suppl.8535
Sprache:
Englisch
Verlag:
American Society of Clinical Oncology (ASCO)
Publikationsdatum:
2012
ZDB Id:
2005181-5
