COMPARATIVE STUDY
JOURNAL ARTICLE

Yield of endoscopic ultrasound-guided fine needle aspiration and endoscopic retrograde cholangiopancreatography for solid pancreatic neoplasms

Mohamed Malak, Daisuke Masuda, Takeshi Ogura, Akira Imoto, Usama M Abdelaal, Eman A Sabet, Lotfy H Abo Dahab, Kazuhide Higuchi
Scandinavian Journal of Gastroenterology 2016, 51 (3): 360-7
26365063

OBJECTIVE: Both endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) and endoscopic retrograde cholangiopancreatography (ERCP) cytology may provide tissue diagnoses in solid pancreatic neoplasms. However, there are scant data comparing these two methods. This study aims at retrospectively comparing EUS-FNA and ERCP tissue sampling and ability of cytopathological diagnosis in solid pancreatic neoplasms and to determine usefulness and adverse events of combining both procedures.

MATERIAL AND METHODS: Two hundred and thirty four patients suspected to have solid pancreatic mass on abdominal ultrasound and/or computed tomography (CT) were enrolled. EUS-FNA (group A), ERCP cytology (group B) and combined procedures (Group C) performed in 105, 91 and 38 cases, respectively.

RESULTS: Sensitivity, specificity and accuracy were 98.9%, 93.3% and 98.1% for group A, and 72.1%, 60% and 71.4% for group B. Those for group C were all 100%. Sensitivity for malignancy in the pancreas head was 100% for group A and 82.4% for group B, and in the pancreas body and tail, 97.6% for group A and 57.1% for group B. EUS-FNA was more sensitive than ERCP cytology in diagnosing malignant pancreatic neoplasms 21-30 mm in size (p = 0.0068), 31-40 mm (p = 0.028) and ≥ 41 mm (p < 0.0001). Sensitivity for pancreatic malignancy with group C was 100% regardless of mass location or size. Adverse events were 1.9%, 6.6% and 2.6% following EUS-FNA, ERCP and combined procedures, respectively.

CONCLUSIONS: EUS-FNA is superior to ERCP cytology for diagnosis of solid pancreatic neoplasms. Although combination of both procedures provide efficient tissue diagnosis and with a minimal adverse events rate, a prospective study including larger number of patients is required.

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