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JOURNAL ARTICLE
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[Value of intraoperative fine needle aspiration cytology in the diagnosis of pancreatic cancer].

OBJECTIVE: To evaluate the value of intraoperative fine needle aspiration cytology (IFNAC) examination in the diagnosis of pancreatic lesions.

METHODS: The clinicopathological data of 491 patients with pancreatic lesions treated in our hospital from May 1998 to June 2013 were retrospectively analyzed. Their clinical features, IFNAC findings, pathological results after IFNAC examination and related complications were summarized. The factors affecting the aspiration biopsy accuracy were analyzed using logistic regression and multi factor analysis.

RESULTS: 491 patients with pancreatic lesions were examined by IFNAC. Among them, cancer cells were found in 434 cases (positive), and were not found in 57 cases (negative). Among the 310 cases who underwent surgical operation, postoperative pathology confirmed 209 cases of pancreatic ductal adenocarcinoma, 8 cases of pancreatic cystadenocarcinoma, 23 cases of solid pseudopapillary tumor of the pancreas, 15 cases of pancreatic neuroendocrine tumor, 14 cases of intraductal papillary mucinous tumor, 2 cases of primary pancreatic gastrointestinal stromal tumor, 17 cases of pancreatic serous cystadenoma, and 22 cases of chronic mass-forming type pancreatitis. The IFNAC test showed a sensitivity of 97.9% (425/434), and specificity of 89.5% (51/57). The IFNAC examination-related complications were pancreatic leakage in a total of 12 patients which were cured after treatment. No bleeding complication was observed. Logistic multivariate analysis showed that tumor size, cystic degeneration, lymph node metastasis and associated chronic pancreatitis are independent factors affecting the IFNAC examination of pancreatic carcinoma.

CONCLUSIONS: IFNAC examination has a high sensitivity and specificity, and with a good safety in clinical use. IFNAC can be used as a powerful tool for the diagnosis of pancreatic cancer, with a high clinical value in use. In the cytology-negative cases, cytology alone can not rule out the diagnosis of pancreatic cancer. Through repeated sampling and combined with intraoperative frozen section pathology can improve the diagnostic accuracy.

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