Hospital Pedro de Elizalde

Resumen es: La persistencia de la vena cava superior izquierda asociada con cardiopatias congenitas suele ser un hallazgo benigno, sin repercusion hemodinamica ni qu...

INTRODUCTION:Paratesticular leiomyoma is an extremely rare benign neoplasm in the pediatric population, with variable clinical presentations that can mimic other scrotal pathologies. CLINICAL OBSERVATION:We present two pediatric patients with paratesticular leiomyoma. The first case was an 11-year-old boy with a long-standing, asymptomatic paratesticular mass, initially suggestive of polyorchidism, approached via a scrotal incision. The second case was a 14-year-old adolescent who presented with testicular pain, with ultrasound findings suggestive of a neoformative process, which required an inguinal exploration. In both cases, complete excision of the lesion was performed, preserving the testicle, and the diagnosis was confirmed by pathology. CONCLUSIONS:Paratesticular leiomyoma can pose diagnostic challenges in pediatrics. Complete excision is curative, and the prognosis is excellent.

Resumen es: Se implanto exitosamente un dispositivo de asistencia ventricular paracorporea neumatica –Berlin Heart-Excor– como soporte ventricular izquierdo prolo...

BACKGROUND: Cranioplasty is an essential procedure to restore cranial integrity, protect neural structures, and improve cosmetic outcomes. However, commercially available implants are often costly, limiting their accessibility in public healthcare systems. Three dimensional (3D) printing offers a low cost alternative for producing patient-specific solutions. METHODS: A retrospective case series of eight patients undergoing cranioplasty using customized polymethylmethacrylate (PMMA) implants fabricated with 3D printed molds was conducted. Computed tomography (CT) scans were used for segmentation and digital modeling. Patient specific molds were designed and printed preoperatively. Variables analyzed included design time, printing time, intraoperative workflow, and clinical outcomes. RESULTS: Design time ranged from approximately 1 hour for small defects to 3 hours for larger defects. Printing time ranged from 2 3 hours for smaller defects and up to 8 10 hours for larger reconstructions. Satisfactory aesthetic outcomes were achieved in 7 of 8 patients (87.5%). No major implant related complications were observed. CONCLUSION: Low cost 3D printing for PMMA cranioplasty is a feasible, accessible, and effective technique for cranial reconstruction, particularly in resource limited settings. Keywords: Cranioplasty; 3D printing; Cranial defect reconstruction; Low cost surgery; Patient specific implants; Polymethylmethacrylate; Skull reconstruction ### Competing Interest Statement The authors have declared no competing interest. ### Funding Statement This study did not receive any funding ### Author Declarations I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained. Yes The details of the IRB/oversight body that provided approval or exemption for the research described are given below: The study protocol was reviewed and approved by the ethics committee of Hospital Santojanni. I confirm that all necessary patient/participant consent has been obtained and the appropriate institutional forms have been archived, and that any patient/participant/sample identifiers included were not known to anyone (e.g., hospital staff, patients or participants themselves) outside the research group so cannot be used to identify individuals. Yes I understand that all clinical trials and any other prospective interventional studies must be registered with an ICMJE-approved registry, such as ClinicalTrials.gov. I confirm that any such study reported in the manuscript has been registered and the trial registration ID is provided (note: if posting a prospective study registered retrospectively, please provide a statement in the trial ID field explaining why the study was not registered in advance). Yes I have followed all appropriate research reporting guidelines, such as any relevant EQUATOR Network research reporting checklist(s) and other pertinent material, if applicable. Yes All data produced in the present study are available upon reasonable request to the authors