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Inicio Gastroenterología y Hepatología The simplified depth-predicting score outperforms the depth-predicting score for...
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Vol. 48. Issue 4.
(April 2025)
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Vol. 48. Issue 4.
(April 2025)
Original article
The simplified depth-predicting score outperforms the depth-predicting score for predicting the depth of invasion in differentiated early gastric cancer patients among nonexpert endoscopists
La puntuación simplificada de predicción de la profundidad supera a la puntuación de predicción de la profundidad para predecir la profundidad de la invasión en pacientes con cáncer gástrico temprano diferenciado entre endoscopistas no expertos
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168
Lulu Zenga, Hui Lia, Tian Huanga, Yuting Henga, Jun Liub,c,
Corresponding author
liujun@ahmu.edu.cn

Corresponding authors.
, Xiangpeng Hua,
Corresponding author
huxiangpeng@ahmu.edu.cn

Corresponding authors.
a Department of Gastroenterology, the Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
b Department of Pathophysiology, School of Basic Medical College, Anhui Medical University, Hefei, Anhui Province, China
c Functional Experiment Center, School of Basic Medical College, Anhui Medical University, Hefei, Anhui Province, China
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Tables (2)
Table 1. Comparison of endoscopic features and scores methods used in the DPS and S-DPS.
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Table 2. Demographics and operational experience of participants (n=19).
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Abstract
Aim

Endoscopists utilize depth-predicting score (DPS) and simplified depth-predicting score (S-DPS) to predict the invasion depth of early gastric cancer based on conventional white-light endoscopic features. The effectiveness of these scores has not been fully elucidated among nonexpert endoscopists. This study aimed to compare the ability of DPS and S-DPS to predict invasion depth of differentiated early gastric cancers by nonexpert endoscopists.

Participants and methods

We collected subitem scores of DPS and S-DPS from 19 nonexpert endoscopists for early gastric cancer conventional white-light endoscopy images in the test dataset to predict the invasion depth of the early gastric cancer conventional white-light endoscopy images. Accuracy, specificity, overdiagnosis rate, and underdiagnosis rate were subsequently calculated using the histological invasion depth as the gold standard.

Results

Using 3 as the cutoff line, the overall S-DPS diagnostic accuracy for invasion depth was significantly greater than that of DPS [73.86% (69.32%, 75.00%) vs. 67.05% (62.50%, 71.59%), p=0.005]. The overall S-DPS overdiagnosis rate was significantly lower than that of DPS [7.58% (3.03%, 13.64%) vs. 28.79% (18.18%, 37.88%), p=0.000]. The overall S-DPS under-diagnosed rate was significantly higher than that of DPS [86.36% (68.18%, 90.91%) vs. 45.45% (31.82%, 59.09%), p=0.000]. The specificity of the S-DPS was significantly greater than that of DPS [92.42% (86.36%, 96.97%) vs. 71.21% (62.12%, 81.82%), p=0.000].

Conclusion

The diagnostic accuracy of the S-DPS was greater than that of the DPS among nonexpert endoscopists. Furthermore, S-DPS is simpler than other methods, making it more conducive to clinical application for nonexpert endoscopists.

Keywords:
Invasion depth
Simplified depth-predicting score
Early gastric cancer
Endoscopists
Abbreviations:
DPS
S-DPS
EGC
GC
EMR
ESD
C-WLE
ME
NBI
EUS
AI
Resumen
Objetivo

Los endoscopistas utilizan la puntuación de predicción de profundidad (depth-predicting score [DPS]) y la puntuación simplificada de predicción de profundidad (S-DPS) para predecir la profundidad de invasión del cáncer gástrico temprano basándose en las características endoscópicas convencionales con luz blanca. La eficacia de estas puntuaciones no se ha dilucidado del todo entre endoscopistas no expertos. El objetivo de este estudio fue comparar la capacidad de la DPS y de la S-DPS para predecir la profundidad de invasión de los cánceres gástricos tempranos diferenciados por endoscopistas no expertos.

Participantes y métodos

Recopilamos las puntuaciones de subelementos de la DPS y la S-DPS de 19 endoscopistas no expertos para imágenes de endoscopia convencional de luz blanca de cáncer gástrico temprano en el conjunto de datos de prueba para predecir la profundidad de invasión de las imágenes de endoscopia convencional de luz blanca de cáncer gástrico temprano. Posteriormente se calcularon la precisión, la especificidad, la tasa de sobrediagnóstico y la tasa de infradiagnóstico utilizando la profundidad de invasión histológica como patrón de referencia.

Resultados

Utilizando 3 como línea de corte, la precisión diagnóstica global de la S-DPS para la profundidad de invasión fue significativamente mayor que la de la DPS (73,86% [69,32%-75,00%] frente al 67,05% [62,50%-71,59%], p=0,005). La tasa global de sobrediagnóstico de S-DPS fue significativamente inferior a la de DPS (7,58% [3,03%-13,64%] frente al 28,79% [18,18%-37,88%], p=0,000). La tasa global de infradiagnóstico de la S-DPS fue significativamente superior a la de la DPS (86,36% [68,18%-90,91%] frente al 45,45% [31,82%-59,09%], p=0,000). La especificidad de la S-DPS fue significativamente mayor que la de la DPS (92,42% [86,36%, 96,97%] frente al 71,21% [62,12%-81,82%], p=0,000).

Conclusiones

La precisión diagnóstica de la S-DPS fue mayor que la de la DPS entre los endoscopistas no expertos. Además, la S-DPS es más sencilla que otros métodos, lo que la hace más propicia para la aplicación clínica por parte de endoscopistas no expertos.

Palabras clave:
Profundidad de invasión
Puntuación simplificada de predicción de profundidad
Cáncer gástrico temprano
Endoscopistas
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