5-year review and reappraisal of ultrasound-guided percutaneous transabdominal fine needle aspiration of pancreatic lesions.

Objective: To reevaluate the efficacy and safety offine needle aspiration cytology (FNAC) of pancreatic lesions performed by transabdominal approach.

Study Design: Retrospective 5-year (2001-2006) audit of all pancreatic FNA samples.

Results: This series includes 267 patients (88 men, 179 women). Seven cases (2.6%) yielded insufficient material for diagnosis; 260 cases were classified as benign (n=118) and malignant (n=142) lesions. Of the 118 benign aspirates, the cytodiagnosis was acute/chronic inflammation in 24, tuberculosis in 1, benign cyst in 10 and a benign aspirate, not otherwise specified, in the remaining 83 cases. Of the 142 malignant aspirates, the cytodiagnosis was adenocarcinoma in 126, neuroendocrine/carcinoid tumor in 7, papillary solid epithelial neoplasm in 2, mucinous cystadenocarcinoma in 2, acinar cell carcinoma in 1 and metastatic small cell carcinoma in lung in 4 cases. Cytohistologic correlation yielded a sensitivity of 81% and specificity of 100%.

Conclusion: A spectrum of pancreatic lesions can be accurately diagnosed by the technique. The false negative rate can be minimized by proper positioning of the needle under guidance and adequate sampling. No postprocedural complications were encountered, proving that this procedure is safe if carried out by an experienced team in a hospital setting.