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Radiological estimation of size in colorectal liver metastases: is it reliable? Comparison with post-resectional measurements

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Abstract

Since the efficiency of percutaneous ablation techniques in treating colorectal liver metastases is dependent on tumor size, the aim of this study was to verify the accuracy of computed tomography or magnetic resonance in estimating the maximum diameter of colorectal liver metastases by comparing these findings with those of pathology in a series of patients who underwent liver resection. Radiological and pathological tumor measurements in 39 patients operated for 69 colorectal liver metastasis were recorded. The radiological measurement was performed by magnetic resonance in 40 tumors (23 cases) and by computed tomography in 29 tumors (16 patients). The mean difference between pathological and radiological sizes was 0.4 cm (p < 0.001). Radiological size was smaller than pathological size in 60.9% of tumors, equal in 16% and bigger in 23% of tumors. The results indicated that radiology significantly underestimates the diameter of liver metastasis. To avoid on-site recurrence after percutaneous ablation therapies due to inaccurate radiological measurement, a radiological size of colorectal metastasis up to 2.5 cm should be considered as selection criteria for this treatment.

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Conflict of interest

The authors certify that there is no conflict of interest with any financial organization regarding the material discussed in this article.

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Authors and Affiliations

  1. Liver Surgery Unit, 3rd Department of Surgery, University School of Medicine, Humanitas Clinical Institute IRCCS, University of Milan, Via, Manzoni 56, Rozzano, 20089, Milan, Italy

    Florin Botea, Matteo Marconi, Marco Montorsi & Guido Torzilli

  2. Department of Radiology, Humanitas Clinical Institute IRCCS, Rozzano, Milan, Italy

    Fabio Lutman & Luca Balzarini

  3. Department of Pathology, University School of Medicine, Humanitas Clinical Institute IRCCS, Rozzano, Milan, Italy

    Massimo Roncalli

Authors
  1. Florin Botea
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  2. Matteo Marconi
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  3. Fabio Lutman
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  4. Luca Balzarini
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  5. Massimo Roncalli
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  6. Marco Montorsi
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  7. Guido Torzilli
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Correspondence to Guido Torzilli.

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Botea, F., Marconi, M., Lutman, F. et al. Radiological estimation of size in colorectal liver metastases: is it reliable? Comparison with post-resectional measurements. Updates Surg 62, 21–26 (2010). https://doi.org/10.1007/s13304-010-0004-0

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  • DOI: https://doi.org/10.1007/s13304-010-0004-0

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