Back
For best output, select "Paper Size" as "A4" and "Margin" as "0" or "None".
To save or print to PDF, please select Print Destination > Save as PDF, enable Background Graphics under "More Settings", then click "Save".
During the congress, E-Posters will be accessible to all participants on the congress website 24/7, as well as in the E-poster stations in the congress center.
Preparing your E-Poster
Please review the E-Poster format requirements carefully when preparing your E-Poster. Should your E-Poster not meet the mentioned requirements, it may not be displayed as described above.
E-Poster Submission Deadline
Please prepare and upload your E-Poster no later than March 14, 2026 11.59PM CET. After this date, you will no longer be able to prepare and upload your E-poster and it will not be displayed and accessible on the congress website.
Please follow the instructions below to input your abstract title.
Abstract titles should be brief and reflect the content of the abstract.
Adequate renal biopsy cores are essential for accurate histopathological diagnosis. Factors such as needle gauge and real-time glomerular assessment influence adequacy. This study evaluated whether the use of a 20x portable microscope with smartphone attachment enhances core adequacy and diagnostic yield in native and allograft kidney biopsies. Secondary objectives included comparing adequacy between 16G and 18G needles, assessing glomerular count estimation accuracy, and evaluating the correlation between core length and glomerular number.
This prospective-retrospective observational study was conducted over three years at a tertiary nephrology center and included 611 adult patients undergoing native or allograft renal biopsy. A total of 1133 cores were analyzed. Patients were divided into four groups based on needle size (16G or 18G) and the use of a 20x CARSON portable microscope with smartphone attachment. Four groups were compared: 18G without microscope (Group A), 18G with microscope (Group B), 16G without microscope (Group C), and 16G with microscope (Group D). Core adequacy, glomerular visualization, correlation of glomeruli number with histopathology and core length were studied. Bedside core length and glomerular estimates were recorded, and final values from biopsy reports were compared.
Comparison of Baseline Characteristics between four groups was done.
The use of the 20x microscope significantly improved core adequacy from 74.56% to 90.37% with 18G (p<0.0001)and from 89.66% to 94.67% with 16G (p=0.086). IF diagnostic yield with 18G improved from 93.44% to 99.28% (p=0.0085).
Cores with no diagnostic yield decreased from 7.04% to 1.66% with 18G (p=0.0009) and from 2.59% to 0.94% with 16G (p=0.1953).
Mean glomerular count was significantly higher with 16G (13.36 ± 3.81) than 18G (8.43 ± 3.96), p<0.00001).
Glomerular count estimation correlated strongly with final histology (r=0.83 for 18G, r=0.87 for 16G).
Core length showed poor correlation with glomerular number (r=0.30 for 18G, 0.19 for 16G).
The 20x portable microscope significantly enhances renal biopsy adequacy, particularly with 18G needles, and improves diagnostic yield by enabling real-time glomerular assessment. Reliance on core length alone is misleading, whereas glomerular visualization under portable microscope provides a reliable and practical tool to guide adequacy. Its most notable benefit is the ability to raise the adequacy of biopsies performed with the smaller 18G needle to a level comparable with those obtained using the larger 16G needle, effectively bridging the long-standing gap between procedural safety and diagnostic accuracy.
The content presented in this abstract was submitted for APCN x TSN 2025. Re-submitting the abstract is permitted by the organizers of the original meeting and written NOC certificate was obtained.
