Jumbo biopsy | definition of jumbo biopsy by Medical dictionary
jumbo biopsy A biopsy obtained endoscopically with a “jumbo biopsy forceps”, which provides a larger and deeper bite of tissue (average 3mm X 2mm) than that obtainable with “large cup” biopsy forceps (average 2mm X 1mm).
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References in periodicals archive
These include jumbo biopsy
using large-capacity forceps, EUS-guided fine-needle aspiration, and EMR .
Although bite-on-bite biopsy was considered a useful technique for digging into the mass with conventional or jumbo biopsy
forceps, the diagnostic yield was low, ranging from 17% to 38% (3).
This is approximately 30 to 60 times larger than the area sampled by jumbo biopsy
forceps (~6 [mm.sup.2]) and standard biopsy forceps (~2.5 [mm.sup.2]) 18], thus, reducing sampling error.
Even using a rigorous sampling technique (4-quadrant biopsies for every 1 to 2 cm of BE using jumbo biopsy
forceps), small foci of dysplasia can be left unsampled.