Prospective Stage-Stratified Histopathologic Study and Proposed Disease-Evolution Model of Gluteal Permanent Synthetic Filler Complications
7. september 2026 opdateret af: Research Inc
This prospective biospecimen cohort will collect and analyze tissue from adults undergoing clinically indicated surgery for gluteal permanent synthetic filler disease.
Two blinded pathologists will score foreign material burden, inflammation, fibrosis, necrosis, vascular and lymphatic injury, and deep-tissue involvement.
Histopathologic severity will be compared across clinical-radiologic stages and time since injection.
The study will propose a cross-sectional disease-evolution framework and assess the reproducibility of the scoring system.
Studieoversigt
Status
Ikke rekrutterer endnu
Betingelser
Detaljeret beskrivelse
Participants will be enrolled before clinically indicated biopsy or filler-removal surgery.
Exposure history, symptoms, physical findings, and MRI stage will be recorded using standardized forms.
During surgery, samples from mapped tissue planes will be collected without extending the planned excision.
Two pathologists blinded to clinical stage will independently grade eight tissue-injury domains and generate a composite severity score.
Disagreements will undergo adjudication.
The study will evaluate associations between tissue findings, time since injection, and clinical-radiologic stage and will use exploratory clustering to identify histopathologic phenotypes.
Because participants are sampled at one operation, the resulting model will be described as a proposed cross-sectional natural-history framework.
Undersøgelsestype
Observationel
Tilmelding (Anslået)
200
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiekontakt
- Navn: Edison Osorio, MD, Plastic surgeon
- Telefonnummer: +573226140611
- E-mail: info@edisonosorio.com
Studiesteder
-
-
Antioquia
-
Medellín, Antioquia, Colombia
- Clinica Bioforma
-
Kontakt:
- Edison Osorio, MD, Plastic surgeon
- Telefonnummer: +573226140611
- E-mail: info@edisonosorio.com
-
-
Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Ingen
Prøveudtagningsmetode
Ikke-sandsynlighedsprøve
Studiebefolkning
Adults undergoing biopsy or surgical removal of gluteal tissue affected by permanent synthetic filler, spanning early exposure through advanced disease with ulceration or necrosis.
Beskrivelse
Inclusion Criteria:
Age 18 years or older.
- Prior gluteal injection of a permanent or unknown nonresorbable filler.
- Clinically indicated biopsy or surgical excision yielding tissue suitable for histopathologic evaluation.
- Available history of approximate injection date and standardized preoperative clinical staging.
- Written consent for tissue analysis and optional future use of deidentified specimens.
Exclusion Criteria:
- Specimen composed only of scar or skin without tissue from the filler-affected region.
- Insufficient tissue quality for routine histology.
- Acute bacterial infection that precludes distinction of the underlying chronic tissue response unless infection is itself a prespecified advanced-stage feature.
- Prior oncologic radiation to the sampled gluteal region.
- Declined consent for research use of surgical tissue.
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
Intervention / Behandling |
|---|---|
|
Prospective Histopathology Cohort
Samples will be obtained from predefined superficial, interface, deep, and visibly abnormal regions without extending the clinically indicated excision.
Each sample will be oriented and linked to an MRI/operative map.
|
Samples will be obtained from predefined superficial, interface, deep, and visibly abnormal regions without extending the clinically indicated excision.
Each sample will be oriented and linked to an MRI/operative map.
Linked arm/group(s): Prospective Histopathology Cohort.
Two pathologists will independently grade foreign material burden, granulomatous inflammation, fibrosis, fat necrosis, vascular injury, lymphatic involvement, muscle injury, and skin necrosis on 0-to-3 ordinal scales.
The proposed composite ranges from 0 to 24; the manual will be locked before the first analytic read.
Linked arm/group(s): Prospective Histopathology Cohort.
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Composite Histopathologic Severity Score by Clinical-Radiologic Stage
Tidsramme: At the index operation and final blinded histopathology assessment of the surgical specimen. 3 months
|
Sum of eight prespecified 0-to-3 domain scores: foreign material burden, granulomatous inflammation, fibrosis, fat necrosis, vascular injury, lymphatic involvement, muscle injury, and skin necrosis.
Total score ranges from 0 to 24; higher scores indicate more severe tissue injury.
|
At the index operation and final blinded histopathology assessment of the surgical specimen. 3 months
|
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Prevalence of Individual Histopathologic Features
Tidsramme: At final histopathology assessment of the index surgical specimen. 3 months
|
Proportion of participants with each prespecified feature and distribution of each 0-to-3 domain grade.
|
At final histopathology assessment of the index surgical specimen. 3 months
|
Andre resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Histopathologic Phenotype Classification
Tidsramme: After completion of tissue collection and database lock, using data from the index specimen. 1 year
|
Data-driven clusters or latent classes based on the eight domains, integrated with clinical and MRI stage to generate a proposed disease-evolution framework.
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After completion of tissue collection and database lock, using data from the index specimen. 1 year
|
Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Sponsor
Efterforskere
- Ledende efterforsker: Edison Osorio, MD, plastic surgery
Publikationer og nyttige links
Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.
Generelle publikationer
- Osorio E, Ramirez B, Herrera O, Suarez C, Ciro C, Varela A. Three-flap Technique: Comprehensive Approach for Biopolymer Removal in the Gluteal and Lumbar Regions. Plast Reconstr Surg Glob Open. 2026 Jul 23;14(7):e7870. doi: 10.1097/GOX.0000000000007870. eCollection 2026 Jul.
- Pachon Suarez JE, Tello VZR, Cifuentes RCR, Cuadros AMP, Salazar MC. Biopolymers: Histopathologic Case Series of Patients with Permanent Synthetic Fillers Presenting Chronic Granulomatous Reaction and Hypercalcemia. Plast Reconstr Surg Glob Open. 2024 Oct 15;12(10):e6159. doi: 10.1097/GOX.0000000000006159. eCollection 2024 Oct.
- Pachon Suarez JE, Salazar MC, Rizo VZ. Classification for Staging and Managing Patients with Biopolymer-induced Human Adjuvant Disease. Plast Reconstr Surg Glob Open. 2022 Feb 24;10(2):e4137. doi: 10.1097/GOX.0000000000004137. eCollection 2022 Feb.
- Xu T, Zhang J, Zhu Y, Zhao W, Pan C, Ma H, Zhang L. A poly(hydroxyethyl methacrylate)-Ag nanoparticle porous hydrogel for simultaneous in vivo prevention of the foreign-body reaction and bacterial infection. Nanotechnology. 2018 Sep 28;29(39):395101. doi: 10.1088/1361-6528/aad257. Epub 2018 Jul 10.
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart (Anslået)
1. oktober 2026
Primær færdiggørelse (Anslået)
1. december 2027
Studieafslutning (Anslået)
1. december 2027
Datoer for studieregistrering
Først indsendt
1. september 2026
Først indsendt, der opfyldte QC-kriterier
7. september 2026
Først opslået (Faktiske)
9. september 2026
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
9. september 2026
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
7. september 2026
Sidst verificeret
1. september 2026
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 009 (Nahrain Medical Research Collective (NMRC))
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
INGEN
IPD-planbeskrivelse
not considered in the informed consent of the patients
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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