Congenital perineal and perianal lipoma with and without anorectal malformation. A case series of eleven patients and updated literature review.
Langer S, Patsch JM, Scharrer A, Ludwiczek J, Metzelder M, Krois W.J Pediatr Surg. 2026 Jan 7;61(3):162914. doi: 10.1016/j.jpedsurg.2025.162914. Online ahead of print.PMID: 41513036

Complications After Surgery for Anorectal Malformations: An ARM-Net consortium Registry Study.
van der Steeg HJJ, Hageman IC, Morandi A, Amerstorfer EE, Sloots CEJ, Jenetzky E, Stenström P, Samuk I, Fanjul M, Midrio P, Schmiedeke E, Iacobelli BD, de Blaauw I, van Rooij IALM; ARM-Net Consortium.J Pediatr Surg. 2025 Sep;60(9):162403. doi: 10.1016/j.jpedsurg.2025.162403. Epub 2025 Jun 6.PMID: 40482809

Anorectal prolapse after anorectal reconstruction: Incidence and risk factors according to the ARM-Net Consortium.
Stenström P, Maestri F, Aminoff D, de Blaauw I, Ludwiczek J, Midrio P, Prato AP, Vilanova-Sanchez A, Morandi A, van Rooij I; ARM‐Net Consortium.Colorectal Dis. 2025 Feb;27(2):e70010. doi: 10.1111/codi.70010.PMID: 39894996

Defining Excellence: The First Core Set of Quality Indicators for the European Paediatric Surgical Audit on Hirschsprung's Disease Care.
Rossi D, Granström AL, Pakarinen M, Bjørnland K, de Blaauw I, Ellebæk M, Leon FF, Gloudemans DJ, Prato AP, Rolle U, Schwarzer N, Tabbers M, Vilanova A, Wijnen R, Sloots CEJ, Wester T; EPSA|ERNICA Registry Group and collaborative authors.Acta Paediatr. 2025 Jun;114(6):1464-1477. doi: 10.1111/apa.17594. Epub 2025 Jan 25.PMID: 39865350

The European Anorectal Malformation Network (ARM-Net) patient registry: 10-year review of clinical and surgical characteristics.
Hageman IC, Midrio P, van der Steeg HJJ, Jenetzky E, Iacobelli BD, Morandi A, Sloots CEJ, Schmiedeke E, Broens PMA, Fascetti Leon F, Çavuşoğlu YH, Gorter RR, Trajanovska M, King SK, Aminoff D, Schwarzer N, Haanen M, de Blaauw I, van Rooij IALM; ARM-Net Consortium.Br J Surg. 2024 Jan 31;111(2):znae019. doi: 10.1093/bjs/znae019.PMID: 38364059

Transitional Care for Patients with Congenital Colorectal Diseases: An EUPSA Network Office, ERNICA, and eUROGEN Joint Venture.
de Beaufort CMC, Aminoff D, de Blaauw I, Crétolle C, Dingemann J, Durkin N, Feitz WFJ, Fruithof J, Grano C, Burgos CM, Schwarzer N, Slater G, Soyer T, Violani C, Wijnen R, de Coppi P, Gorter RR; Transition of Care study group.J Pediatr Surg. 2023 Dec;58(12):2319-2326. doi: 10.1016/j.jpedsurg.2023.06.008. Epub 2023 Jun 14.PMID: 37438237

A Quality Assessment of the ARM-Net Registry Design and Data Collection.
Hageman IC, van der Steeg HJJ, Jenetzky E, Trajanovska M, King SK, de Blaauw I, van Rooij IALM; ARM-Net Consortium.J Pediatr Surg. 2023 Oct;58(10):1921-1928. doi: 10.1016/j.jpedsurg.2023.02.049. Epub 2023 Feb 25.PMID: 37045715

Bowel function and associated risk factors at preschool and early childhood age in children with anorectal malformation type rectovestibular fistula: An ARM-Net consortium study.
van der Steeg HJJ, van Rooij IALM, Iacobelli BD, Sloots CEJ, Morandi A, Broens PMA, Makedonsky I, Leon FF, Schmiedeke E, Vázquez AG, Miserez M, Lisi G, Midrio P, Amerstorfer EE, Fanjul M, Ludwiczek J, Stenström P, van der Steeg AFW, de Blaauw I; On-behalf-of-the-ARM-Net-Consortium.J Pediatr Surg. 2022 Sep;57(9):89-96. doi: 10.1016/j.jpedsurg.2022.02.015. Epub 2022 Feb 22.PMID: 35317943 

What do pediatric surgeons think about sexual issues in dealing with patients with anorectal malformations? The ARM-Net consortium members' opinion.
Amerstorfer EE, Grano C, Verhaak C, García-Vasquez A, Miserez M, Radleff-Schlimme A, Schwarzer N, Haanen M, de Blaauw I, Jenetzky E, van der Steeg A, van Rooij IALM; ARM-Net consortium.Pediatr Surg Int. 2019 Sep;35(9):935-943. doi: 10.1007/s00383-019-04506-0. Epub 2019 Jul 5.PMID: 31278477

The impact of perioperative care on complications and short term outcome in ARM type rectovestibular fistula: An ARM-Net consortium study.
van der Steeg HJJ, van Rooij IALM, Iacobelli BD, Sloots CEJ, Leva E, Broens P, Fascetti Leon F, Makedonsky I, Schmiedeke E, García Vázquez A, Midrio P, Lisi G, Amerstorfer E, Miserez M, Fanjul M, Ludwiczek J, Stenström P, Giuliani S, van der Steeg AFW, de Blaauw I; ARM-Net consortium.J Pediatr Surg. 2019 Aug;54(8):1595-1600. doi: 10.1016/j.jpedsurg.2019.03.008. Epub 2019 Mar 21.PMID: 30962020