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Gastrointest Endosc. 2005 May;61(6):746-52.

Ethanol lavage of pancreatic cystic lesions: initial pilot study.

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  • 1Gastrointestinal Unit, Department of Pathology, Massachusetts General Hospital, Boston, 02114, USA.

Abstract

BACKGROUND:

Ethanol lavage has been used to successfully and safely ablate cystic lesions of the liver, the kidneys, and the thyroid.

METHODS:

Asymptomatic patients who undergo EUS examination for a pancreatic cystic lesion were eligible. Patients underwent complete examination with a linear-array echoendoscope, and cyst characteristics were documented. After evacuation of the cyst with needle aspiration, the cyst cavity was lavaged with ethanol for 3 to 5 minutes. The concentration (5%-80%) of ethanol was gradually increased over the course of the study. Patients were monitored for complications during 2 hours after the procedure, and further follow-up was obtained at 72 hours and 1 year after lavage.

OBSERVATIONS:

Twenty-five patients were enrolled, 80% were women, and the mean age of all patients was 64.5 years. Cysts had a mean diameter of 19.4 mm and were equally located in the head, the body, and the tail of the pancreas. Cyst-fluid characteristics included high viscosity in 13 (52%) and a mean carcinoembryonic antigen and amylase of 5916 ng/mL and 11,506 U/L, respectively. None of the patients reported any symptoms in short- and long-term follow-up. Of the 23/25 patients with complete follow-up, 8 patients (35%) had complete resolution of their cysts on follow-up imaging. Five patients underwent resection, and histologic evidence of epithelial ablation was seen.

CONCLUSIONS:

Ethanol lavage of pancreatic cystic lesions is safe and feasible. A subset of patients undergoing ethanol lavage appears to have long-term resolution on follow-up imaging. Further prospective studies are required to determine if ethanol lavage is an effective treatment for pancreatic cystic lesions.

PMID:
15855986
[PubMed - indexed for MEDLINE]
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