LI-RADS TR · Fígado

LI-RADS TR LI-RADS Treatment Response

vigente

Assesses response of treated HCC observations after locoregional therapy.

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Escala de categorias

Nonviable Equivocal Viable Nonevaluable

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Procedência e vigência

Órgão emissor: American College of Radiology
Versão: v2018
Ano: 2018
Família: léxico
Tipo de lógica: flat
Modalidade: CT, MRI
Fonte primária: LI-RADS Treatment Response algorithm (CT/MRI)
Última verificação: 2026-06-22
Última checagem: 2026-06-22

Lógica de decisão

Forma estruturada (flat). Uma futura calculadora a lê; as categorias abaixo são a superfície legível.

Mostrar a lógica estruturada (JSON)

{
  "categories": [
    "Nonviable",
    "Equivocal",
    "Viable",
    "Nonevaluable"
  ]
}

Categorias num relance

Cat.	Significado	Conduta	Risco	Fonte
Nonviable	LR-TR Nonviable Treated observation showing no perceived intralesional enhancement, or showing only expected post-treatment enhancement patterns (e.g., a thin uniform peripheral rim of enhancement) for the type of locoregional therapy used and the time elapsed since treatment. This category indicates no imaging evidence of gross (macroscopic) tumor viability, though it does not exclude microscopic tumor on histology.	Per the AASLD/LI-RADS consensus management suggestions cited in the source, a nonviable treated observation is managed with continued routine imaging surveillance; no measurement of viable tumor is reported.	Reflects low perceived probability of macroscopic tumor viability/recurrence.	okfonte PMC6920285 (Kierans/Chernyak et al., Insights Imaging 2019, LR-TR pictorial review) 'LR-TR response categories - LR-TR Nonviable'; cross-checked PMC5771991 (Abdom Radiol 2017) 'LI-RADS treatment response algorithm'
Equivocal	LR-TR Equivocal Treated observation with enhancement that cannot be confidently categorized as either viable or nonviable because of overlapping post-treatment enhancement features, in the absence of technical or patient-related limitations (i.e., the study is adequate but findings are indeterminate).	Source notes that for an equivocal response the decision to re-treat is weighed against short-interval follow-up imaging, typically after multidisciplinary discussion; if unsure between categories the algorithm directs choosing Equivocal. The viable-tumor size is still reported.	Intermediate / uncertain probability of residual or recurrent viable tumor.	okfonte PMC6920285 'LR-TR response categories - LR-TR Equivocal' and 'Pitfalls' / tie-breaking text; PMC5771991 'LI-RADS treatment response algorithm'
Viable	LR-TR Viable Treated observation with nodular, mass-like, or thick irregular tissue showing arterial-phase hyperenhancement (APHE), 'washout' appearance, or enhancement similar to the pre-treatment tumor. These features indicate macroscopic viable tumor with high certainty (applies to all locoregional therapies except radiation-based therapy, where intralesional enhancement and washout can persist for months before regressing).	Per the source, the largest single dimension of the enhancing (viable) tumor is measured and reported to guide re-treatment or alternative therapy; reporting the pre- and post-treatment category/size communicates magnitude of response and transplant/downstaging eligibility.	Reflects high perceived probability of residual/recurrent viable tumor.	okfonte PMC6920285 'LR-TR response categories - LR-TR Viable' and 'Management recommendations'; PMC5771991 'LI-RADS treatment response algorithm'
Nonevaluable	LR-TR Nonevaluable	—	—	okfonte

Referências cruzadas

caracterizaLI-RADS. Liver Imaging Reporting and Data System, CT/MRI v2018LI-RADS TR assesses treated observations categorized by diagnostic LI-RADS.

Histórico de versões

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