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DOI: 10.1055/s-0028-1109491
© Georg Thieme Verlag KG Stuttgart · New York
Value of Endoscopic Ultrasonography-Guided Fine Needle Aspiration (FNA) in the Diagnosis of Neoplastic Tumor(-like) Pancreatic Lesions in Daily Clinical Practice
Stellenwert der Endosonografie(EUS)-geführten Feinnadelpunktion (FNP) in der Diagnostik neoplastischer und tumorähnlicher Pankreasläsionen in der täglichen klinischen PraxisPublication History
received: 26.8.2008
accepted: 3.5.2009
Publication Date:
06 November 2009 (online)

Zusammenfassung
Ziel: Untersuchung des diagnostischen Stellenwerts der EUS-geführten FNP für solide und zystische Pankreastumore, tumorähnliche Läsionen als auch Metastasen in peripankreatischen Lymphknoten sowie ihren Einfluss auf den therapeutischen Entscheidungsprozess. Zytologische und pathohistologische Untersuchungsergebnisse wurden verglichen mit: 1. -einander und 2. Detektionsraten verschiedener Bildgebungsverfahren. Patienten und Methoden: Insgesamt wurden 153 Patienten (mittleres Alter: 56,9 Jahre) einer EUS-gestützten FNP von I/ 2000 – III/ 2003 unterzogen. Ergebnisse: Im Vergleich verschiedener bildgebender Verfahren wie CT (80 %), MRT (57,1 %) und abdominellem US (88,8 %) erreichte die EUS die höchste diagnostische Genauigkeit: 100 %. Für das EUS-basierte T-Staging bei 26 operierten Patienten mit malignem Tumor lag eine Sensitivität von 73,3 % vor (Spezifität: 85,9 %; PPV: 69,2 %; NPV: 84,4 %) – Parameter für das N-Staging (n = 25): Sensitivität (61,5 %), Spezifität (75 %), NPV (64,3 %), PPV (72,7 %). Während die Sensitivität der EUS-gestützten FNP der operierten Patienten (n = 55) 81,4 % betrug (Spezifität: 75 %; PPV: 92,1 %; NPV: 52,9 %), waren die Parameter bei chronischer Pankreatitits (n = 30) wie folgt: Sensitivität im Nachweis eines malignen Pankreastumors: 50 % Spezifität: 91,7 %; PPV: 60 %; NPV: 88 %. Basierend auf den präoperativen Charakteristika wie Diagnoseverdacht, TNM-Stadium und Tumorentität wurde so eine Operation bei 29 / 153 Patienten (19 %) vermieden. Schlussfolgerung: Die EUS-gestützte FNP verbessert die Diagnoseklärung (Malignität und Tumorentität) von soliden und zystischen Pankreastumoren sowie tumorähnliche Läsionen, was zudem die frühe und suffiziente Therapieentscheidung erlaubt.
Abstract
Purpose: To investigate the value of EUS-guided FNA in the diagnosis of solid and cystic pancreatic tumor(-like) lesions as well as metastatic tumor growth within peripancreatic lymph nodes and its impact on therapeutic decision-making. The results of the cytologic and pathohistological investigation were compared with i) each other and ii) the detection rates of various imaging procedures. Patients and Methods: Overall, 153 patients (mean age, 56.9 years) underwent EUS-guided FNA from I/ 2000 – III/ 2003. Results: Comparing various imaging procedures such as CT scan (80 %), MRI (57.1 %) and abdominal US (88.8 %), EUS achieved the highest diagnostic accuracy: 100 %. For EUS-based T-staging in 26 patients with malignant tumor lesions undergoing surgical intervention, there was a sensitivity of 73.3 % (specificity, 85.9 %; PPV, 69.2 %; NPV, 84.4 %), while the parameters for N-staging (n = 25) were: sensitivity, 61.5 %; specificity, 75 %; NPV, 64.3 %; PPV, 72.7 %. While the sensitivity of EUS-guided FNA in the group of patients who underwent surgical intervention (n = 55) was 81.4 % (specificity, 75 %; PPV, 92.1 %; NPV, 52.9 %), the parameters were as follows in the subgroup of individuals with chronic pancreatitis (n = 30): sensitivity in detecting a malignant pancreatic tumor lesion, 50 %; specificity, 91.7 %; PPV, 60 %; NPV, 88 %. Based on preoperative characteristics such as suspected diagnosis, TNM stage and tumor entity, a surgical intervention could be avoided in 29 / 153 patients (19 %). Conclusion: EUS-guided FNA allows more precise diagnosis clarification (malignant tumor growth and tumor entity) in solid and cystic pancreatic tumor(-like) lesions, which may assist in early and sufficient therapeutic decision-making.
Key words
pancreas - tumor - adenocarcinoma - endoscopy - interventional procedures
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Dr. Frank Meyer
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