title: PET-CT as an Alternative to Fiducial Markers Guidance in Liver Metastasis Treatment.
abstract: The liver is the organ most commonly affected by colorectal cancer metastasis. Currently, liver resection is the treatment of choice, but in cases where it is not possible, intensity-modulated radiation therapy is an alternative. We report the case of a 57-year-old woman whose colorectal carcinoma metastasized to the liver. She was referred for implantation of fiducial markers for intensity-modulated radiation therapy planning. PET-CT stands out as an additional tool for distinguishing metabolically active tumor tissue from other tissues, ensuring effective introduction of percutaneous fiducial markers, especially in cases where use of conventional imaging techniques is limited.
authors: From the Department of Nuclear Medicine, Hospital Israelita Albert Einstein, São Paulo, Brazil.
authors: Fernanda
authors: F
authors: Granato
authors: Andre C
authors: AC
authors: Felicio
authors: Lilian Yuri Itaya
authors: LY
authors: Yamaga
authors: Solange Amorim
authors: SA
authors: Nogueira
authors: Taise
authors: T
authors: Vitor
mesh_terms: D002277:Carcinoma / Q000000981:diagnostic imaging* / Q000532:radiotherapy / Q000556:secondary; D015179:Colorectal Neoplasms / Q000473:pathology*; D005260:Female; D057918:Fiducial Markers; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging* / Q000532:radiotherapy / Q000556:secondary; D008875:Middle Aged; D000072078:Positron Emission Tomography Computed Tomography; D019919:Prosthesis Implantation / Q000379:methods*; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods; D050397:Radiotherapy, Intensity-Modulated / Q000379:methods; D025321:Surgery, Computer-Assisted / Q000379:methods*