Division of Gastroenterology, Department of Medicine, University of Washington, Seattle, WA 98109, USA.
Gastroenterol Res Pract. 2011;2011:671659. doi: 10.1155/2011/671659. Epub 2011 Oct 9.
Background and Study Aims. Most available jumbo cup forceps require a 3.7 mm biopsy channel, necessitating the use of standard-sized colonoscope. A newer jumbo forceps (Radial Jaw 4 Jumbo Biopsy Forceps [RJ4]) fits within a 3.2 mm biopsy channel, allowing use with a pediatric colonoscope. To assure the RJ4 did not alter biopsy adequacy, we compared the size and quality of specimens to a historical jumbo cup forceps (Radial Jaw 3 Max Capacity Biopsy Forceps, [RJ3 MC]). Patients and Methods. A retrospective comparative study of biopsies taken with either forceps. Biopsies were compared for diameter, depth, crush artifact, and acceptability for diagnosis. Results. 333 specimens were taken with RJ4 and 335 specimens with the RJ3 MC. Mean sample diameter was 4.45 mm and 4.55 mm for the RJ4 and RJ3 MC (P = 0.41). Mean depth of biopsies with the RJ4 was greater (P < 0.01). Conclusions. Biopsies from the RJ4 are similar in size and quality to biopsies from the RJ3 MC. The RJ4 has the advantage of fitting in a smaller biopsy channel.
背景和研究目的。大多数现有的巨无霸杯活检钳需要 3.7mm 的活检通道，因此需要使用标准尺寸的结肠镜。一种新型的巨无霸活检钳（Radial Jaw 4 Jumbo Biopsy Forceps [RJ4]）可适配 3.2mm 的活检通道，允许使用儿科结肠镜。为确保 RJ4 不会改变活检的充分性，我们将其标本的大小和质量与历史上的巨无霸杯活检钳（Radial Jaw 3 Max Capacity Biopsy Forceps，[RJ3 MC]）进行了比较。
患者和方法。这是一项使用两种活检钳进行的回顾性比较研究。对活检标本的直径、深度、压痕和诊断可接受性进行比较。
结果。使用 RJ4 采集了 333 个标本，使用 RJ3 MC 采集了 335 个标本。RJ4 的平均标本直径为 4.45mm，RJ3 MC 的平均标本直径为 4.55mm（P = 0.41）。RJ4 活检的平均深度更大（P < 0.01）。
结论。RJ4 的活检标本在大小和质量上与 RJ3 MC 的活检标本相似。RJ4 的优势在于可适配更小的活检通道。
