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Diagnosis of bile duct cancer by bile cytology: usefulness of post-brushing biliary lavage fluid.

ABSTRACT: BACKGROUND: Pathologic evidence of biliary diseases can be obtained from cytology in addition to endoscopic retrograde cholangiopancreatography (ERCP); however, the diagnostic effectiveness is not satisfactory. STUDY AIM: This retrospective, single-center study evaluated the efficacy of various sampling methods for the cytologic diagnosis of bile duct cancer. PATIENTS AND METHODS: Biliary samples included bile that was simply aspirated, brush smear, brush-rinsed saline, and post-brushing biliary lavage fluid. A set of samples was compared for cytologic efficacy in 76 patients with surgically proven bile duct cancer and in 50 patients with benign biliary stricture. RESULTS: The cytologic sensitivity for diagnosing biliary cancer was 34 % with aspirated bile, 32 % with brush smear, 43 % with brush-rinsed saline, and 70 % with post-brushing biliary lavage fluid, in contrast to the null false-positive result in the benign cases. The sensitivity of cytology was significantly higher with post-brushing lavage fluid than with the other three sampling methods (P < 0.0001), and post-brushing lavage fluid improved the cumulative sensitivity by 24 % (P = 0.002). The sensitivity of biliary cytology was also associated with the amount of aspirated bile (P = 0.01) and with the aspiration site (P = 0.03). The rate of cancer positivity in a cytology set differed according to the tumor macroscopic type (85 % in the protruding type vs. 40 % in the flat type; P = 0.003), and according to the size of the cancer (87 % for tumors ≥ 50 mm vs. 66 % for tumors < 50 mm; P = 0.02). CONCLUSIONS: Post-brushing biliary lavage fluid cytology provides superior diagnostic efficacy, and its addition to ERCP procedures is recommended for obtaining cytologic evidence of bile duct cancer.

SUBMITTER: Sugimoto S

PROVIDER: S-EPMC4554506 | biostudies-other | 2015 Aug

REPOSITORIES: biostudies-other

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Project description:Background Infectious complications can cause lethal liver failure after hepatectomy with biliary reconstruction. This study assessed the increased risk for postoperative infectious complications in patients who underwent hepatectomy with biliary reconstruction and explored the possibility of predicting pathogenic microorganisms causing postoperative infectious complications based on preoperative monitoring of bile cultures. Methods This study involved 310 patients who received major hepatectomy with or without biliary reconstruction at our institution between January 2010 and December 2019. The relationship between the microorganisms detected through perioperative monitoring of bile culture and those in the postoperative infectious foci was examined. Results Forty-nine patients underwent major hepatectomy with biliary reconstruction, and 261 received hepatectomy without biliary reconstruction. The multivariate analysis revealed hepatectomy with biliary reconstruction to be associated with an increased risk of postoperative infectious complications (odds ratio: 22.9, 95% confidence interval: 5.2–164.3) compared to hepatectomy without biliary reconstruction. In the patients with biliary reconstruction, the concordance rates between the microorganisms detected in the postoperative infectious foci and those in preoperative bile cultures were as follows: incisional surgical site infection (44.4%), organ/space surgical site infection (52.9%), bacteremia (47.1%), and pneumonia (16.7%); the concordance rates were high, and the risk of infection increased over time. Conclusions Biliary reconstruction is a significant risk factor for postoperative infectious complications, and preoperative bile cultures may aid in prophylactic and therapeutic antimicrobial agent selection. Bile culture; Biliary drainage; Hepatectomy with extrahepatic bile duct resection and biliary reconstruction; Prophylactic and therapeutic antimicrobial agent; Surgical site infection; Postoperative infectious complications.

Project description:BACKGROUND:A history of abdominal biliary tract surgery has been identified as a relative contraindication for laparoscopic common bile duct exploration (LCBDE), and there are very few reports about laparoscopic procedures in patients with a history of abdominal biliary tract surgery. METHODS:We retrospectively reviewed the clinical outcomes of 227 consecutive patients with previous abdominal biliary tract operations at our institution between December 2013 and June 2019. A total of 110 consecutive patients underwent LCBDE, and 117 consecutive patients underwent open common bile duct exploration (OCBDE). Patient demographics and perioperative variables were compared between the two groups. RESULTS:The LCBDE group performed significantly better than the OCBDE group with respect to estimated blood loss [30 (5-700) vs. 50 (10-1800) ml; p?=?0.041], remnant common bile duct (CBD) stones (17 vs. 28%; p?=?0.050), postoperative hospital stay [7 (3-78) vs. 8.5 (4.5-74) days; p?=?0.041], and time to oral intake [2.5 (1-7) vs. 3 (2-24) days; p?=?0.015]. There were no significant differences in the operation time [170 (60-480) vs. 180 (41-330) minutes; p?=?0.067]. A total of 19 patients (17%) in the LCBDE group were converted to open surgery. According to Clavien's classification of complications, the LCBDE group had significantly fewer postoperative complications than the OCBDE group (40 vs. 57; p?=?0.045). There was no mortality in either group. Multiple previous operations (??2 times), a history of open surgery, and previous biliary tract surgery (including bile duct or gallbladder?+?bile duct other than cholecystectomy alone) were risk factors for postoperative adhesion (p?=?0.000, p?=?0.000, and p?=?0.000, respectively). CONCLUSION:LCBDE is ultimately the least invasive, safest, and the most effective treatment option for patients with previous abdominal biliary tract operations and is especially suitable for those with a history of cholecystectomy, few previous operations (<?2 times), or a history of laparoscopic surgery.

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Diagnosis of bile duct cancer by bile cytology: usefulness of post-brushing biliary lavage fluid.

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