Research Article

Differentiating Small (1 cm) Focal Liver Lesions as Metastases or Cysts by means of Computed Tomography: A Case-Study to Illustrate a Fuzzy Logic-Based Method to Assess the Impact of Diagnostic Confidence on Radiological Diagnosis

Figure 1

Readers assessed small (≤1 cm) focal liver lesions as cyst or metastasis on 64-row Computed Tomography (CT) axial images acquired in the venous phase. Lesions were confirmed to be cysts (a) when showing no changes (b) at imaging followup, as occurred in this 71-year-old male patient with prostate cancer. On the contrary, lesions (c) showing increase in size during the followup (d) were assessed as metastases, as occurred in this 57-year-old male patient operated for colonic cancer.
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(a)
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(b)
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(c)
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(d)