# OnCo record mal-pdt-versus-cryotherapy-superficial-bcc (trial). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)". Whole corpus: https://onco.cc/api/v1/onco.nt
@prefix schema: <https://schema.org/> .
@prefix onco: <https://onco.cc/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://onco.cc/trials/mal-pdt-versus-cryotherapy-superficial-bcc/>
  a schema:MedicalTrial ;
  onco:kind "trial" ;
  schema:identifier "mal-pdt-versus-cryotherapy-superficial-bcc" ;
  schema:name "Photodynamic therapy against cryotherapy for superficial basal cell carcinoma"@en ;
  schema:alternateName "Basset-Seguin trial"@en, "MAL-PDT versus cryotherapy in superficial basal cell carcinoma"@en ;
  schema:description "Freezing a thin basal cell carcinoma with liquid nitrogen and treating it with light gave the same number of recurrences five years later. What separated them was how the skin looked afterwards, and light was much better."@en ;
  schema:url <https://onco.cc/trials/mal-pdt-versus-cryotherapy-superficial-bcc/> ;
  schema:dateModified "2026-09-25"^^xsd:date ;
  schema:citation <https://doi.org/10.1684/ejd.2008.0472>, <https://pubmed.ncbi.nlm.nih.gov/18693158/> ;
  onco:status "mixed" ;
  onco:phase "3" ;
  onco:cancers <https://onco.cc/cancers/basal-cell-carcinoma/>, <https://onco.cc/cancers/skin-cancer/> ;
  onco:technologies <https://onco.cc/technologies/photodynamic-therapy-lasers/>, <https://onco.cc/terms/cryoablation/> ;
  onco:drugs <https://onco.cc/drugs/aminolevulinic-acid/> ;
  onco:terms <https://onco.cc/terms/topical-and-destructive-treatment-bcc/> ;
  onco:trials <https://onco.cc/trials/mal-pdt-versus-surgery-nodular-bcc/>, <https://onco.cc/trials/mal-pdt-imiquimod-fluorouracil-superficial-bcc/> .