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Liquid Biopsy for Cancer: Review and Implications for the Radiologist.

Jacob J Underwood1, Rehan S Quadri1, Sanjeeva P Kalva1

  • 1From the Texas College of Osteopathic Medicine, University of North Texas Health Science Center, Fort Worth, Tex (J.J.U.); Division of Interventional Radiology, Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (R.S.Q., H.S., P.D.S.); Division of Interventional Radiology, Department of Radiology, Massachusetts General Hospital, 55 Fruit St, GRB-290, Boston, Mass 02114 (S.P.K., P.D.S.); Division of Hematology/Oncology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Tex (A.R.S., M.S.B.).

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Summary

Liquid biopsy, a noninvasive blood test, analyzes circulating tumor markers for cancer management. This technology may enhance or change the role of diagnostic imaging in precision cancer care.

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Area of Science:

  • Oncology
  • Molecular Diagnostics
  • Radiology

Background:

  • Diagnostic imaging is crucial for cancer screening, diagnosis, and surveillance.
  • Molecular tumor profiling for targeted therapy typically requires invasive tissue biopsies.
  • Tumor resistance to targeted therapies necessitates serial monitoring, often via tissue acquisition.

Purpose of the Study:

  • To review the clinical applications of liquid biopsy in cancer care.
  • To explore the potential impact of liquid biopsy on diagnostic imaging and image-guided procedures.
  • To discuss the role of liquid biopsy in the context of precision medicine.

Main Methods:

  • Literature review of studies on liquid biopsy in oncology.
  • Analysis of current clinical uses of liquid biopsy.
  • Discussion of emerging applications in cancer screening, diagnosis, and surveillance.
  • Evaluation of the interplay between liquid biopsy and diagnostic imaging.

Main Results:

  • Liquid biopsy offers a noninvasive alternative to tissue acquisition for tumor marker analysis.
  • It is clinically utilized when tissue biopsy is not feasible or adequate.
  • Ongoing research investigates its use in cancer screening, diagnosis, and surveillance.
  • Liquid biopsy shows potential to complement or alter the role of imaging in cancer management.

Conclusions:

  • Liquid biopsy is an evolving noninvasive tool for cancer management.
  • It has the potential to significantly impact precision medicine and cancer care strategies.
  • The integration of liquid biopsy with diagnostic imaging may redefine cancer surveillance and treatment guidance.