US-guided percutaneous needle biopsy of the spleen using 18-gauge versus 21-gauge needles
✍ Scribed by Ping Liang; Yangyan Gao; Yang Wang; Xiaoling Yu; Dejiang Yu; Baowei Dong
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 172 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0091-2751
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✦ Synopsis
Abstract
Purpose
To compare the techniques of sonographically (US)‐guided percutaneous needle biopsy of the spleen using 18‐gauge and 21‐gauge needles.
Methods
Forty‐two patients undergoing 43 spleen biopsy procedures for focal lesions (n = 27 [16 single, 11 multiple]) or diffuse splenomegaly (n = 15) were analyzed. Two groups were divided randomly according to needle type: group 1 comprised 25 patients biopsied with an 18‐gauge cutting needle for histologic examination; group 2 comprised 17 patients biopsied with a 21‐gauge needle for histologic and cytologic examinations. Diagnostic accuracy, complication rate, and number of needle passes were compared between the 2 groups.
Results
Correct histopathologic diagnosis was obtained in 36 cases, whereas incorrect diagnosis occurred in 6 cases. The accuracy of US‐guided spleen biopsy in this series was 85.7%, with 1 patient (2.4%) having postprocedural hemorrhage. Compared with the 21‐gauge needle, the 18‐gauge needle had higher diagnostic accuracy (P < 0.05), required fewer needle passes (P < 0.05), and there was no significant difference in overall complication rate.
Conclusion
Because biopsy with an 18‐gauge needle yields larger and unfragmented samples with higher diagnostic rate compared with a 21‐gauge needle, and no increased rate of major complication requiring surgical intervention, it may be advantageous to use an 18‐gauge cutting needle in the US‐guided needle biopsy of splenic lesions. © 2007 Wiley Periodicals, Inc. J Clin Ultrasound, 2007