4.3 Article

Parastomal hernia prevention with permanent mesh in end colostomy: failure with late follow-up of cohorts in three randomized trials

Journal

HERNIA
Volume 27, Issue 3, Pages 657-664

Publisher

SPRINGER
DOI: 10.1007/s10029-023-02781-4

Keywords

Parastomal; Hernia; Prevention; Mesh

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This study aimed to evaluate the long-term occurrence of parastomal hernia (PH) after the use of a prophylactic synthetic non-absorbable mesh in elective end colostomy. Long-term data from three randomized controlled trials were collected and analyzed. The results showed that the presence of a prophylactic mesh did not significantly reduce the development of PH in the overall study population, but the open retromuscular technique had a higher reduction in PH occurrence.
PurposeShort-term results have been reported regarding parastomal hernia (PH) prevention with a permanent mesh. Long-term results are scarce. The objective was to assess the long-term PH occurrence after a prophylactic synthetic non-absorbable mesh.MethodsLong-term data of three randomized controlled trials (RCTs) were collected. The primary outcome was the detection of PH based exclusively on a radiological diagnosis by computed tomography (CT) performed during the long-term follow-up. The Kaplan-Meier method was used for the comparison of time to diagnosis of PH according to the presence of mesh vs. no-mesh and the technique of mesh insertion: open retromuscular, laparoscopic keyhole, and laparoscopic modified Sugarbaker.ResultsWe studied 121 patients (87 men, median age 70 years), 82 (67.8%) of which developed a PH. The median overall length of follow-up was 48.5 months [interquartile range (IQR) 14.4-104.9], with a median time until PH diagnosis of 17.7 months (IQR 9.3-49.0). The survival analysis did not show significant differences in the time to development of a PH according to the presence or absence of a prophylactic mesh neither in the overall study population (log-rank, P = 0.094) nor in the groups of each technique of mesh insertion, although according to the surgical technique, a higher reduction in the appearance of PH for the open retromuscular technique was found (log-rank, P = 0.001).ConclusionIn the long-term follow-up placement of a non-absorbable synthetic prophylactic mesh in the context of an elective end colostomy does not seem effective for preventing PH.

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