Methodological limitations of NOM in the WSES acute appendicitis guidelines

The 2025 WSES Guidelines endorse nonoperative management (NOM) for uncomplicated acute appendicitis. However, the oncologic risks and methodological limitations of this approach require strict scrutiny. Applying the GRADE framework, admission computed tomography presents severe clinical indirectness, underestimating microperforations and failing to exclude occult appendiceal neoplasms in up to 3.2% of cases. Furthermore, contemporary data demonstrate that NOM recurrence rates reach 42.6% at three years. The perceived safety profile of initial antibiotic therapy is skewed. Definitive anatomical resolution and operative safety must remain the primary endpoints in emergency surgical care.

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Publication Details

Journal
World Journal of Emergency Surgery
Published
2026-05-21
DOI
https://doi.org/10.1186/s13017-026-00703-0
Primary Topic
Appendicitis Diagnosis and Management
Type
article
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article

Methodological limitations of NOM in the WSES acute appendicitis guidelines

Pedro Henrique Grosso, Francisco Alcides Dias Filho, João Vitor Grosso
World Journal of Emergency Surgery
Appendicitis Diagnosis and Management
article

Methodological limitations of NOM in the WSES acute appendicitis guidelines

Pedro Henrique Grosso, Francisco Alcides Dias Filho, João Vitor Grosso
article en

Abstract

The 2025 WSES Guidelines endorse nonoperative management (NOM) for uncomplicated acute appendicitis. However, the oncologic risks and methodological limitations of this approach require strict scrutiny. Applying the GRADE framework, admission computed tomography presents severe clinical indirectness, underestimating microperforations and failing to exclude occult appendiceal neoplasms in up to 3.2% of cases. Furthermore, contemporary data demonstrate that NOM recurrence rates reach 42.6% at three years. The perceived safety profile of initial antibiotic therapy is skewed. Definitive anatomical resolution and operative safety must remain the primary endpoints in emergency surgical care.

World Journal of Emergency SurgeryVol. 21(1)
Universidade Estadual do Paraná (BR), Faculdades Integradas de Cacoal (BR)
Good health and well-being
Openalex Percentile: Top 5%
Appendicitis Diagnosis and Management
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