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Does Computed Tomography Have the Ability to Differentiate Aggressive From Nonaggressive Solid Pseudopapillary

Ashita Rastogi, Mathew Assing1, Mellisa Taggart2

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|December 30, 2017
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This summary is machine-generated.

Contrast-enhanced computed tomography (CECT) can help differentiate aggressive from nonaggressive solid pseudopapillary neoplasms (SPNs). Tumors with higher Hounsfield units and progressive delayed enhancement suggest aggressive SPNs.

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Area of Science:

  • Radiology
  • Oncology
  • Gastroenterology

Background:

  • Solid pseudopapillary neoplasms (SPNs) are rare pancreatic tumors.
  • Differentiating aggressive from nonaggressive SPNs is crucial for treatment planning.

Purpose of the Study:

  • To evaluate the efficacy of contrast-enhanced computed tomography (CECT) in distinguishing aggressive from nonaggressive pancreatic SPNs.
  • To identify imaging features on CECT that correlate with tumor aggressiveness.

Main Methods:

  • Forty treatment-naive patients with pathologically confirmed pancreatic SPNs were included.
  • A 4-phase CECT pancreatic protocol was used to assess imaging characteristics.
  • Radiologists evaluated tumor features, and statistical tests compared aggressive vs. nonaggressive groups.

Main Results:

  • No significant differences were found in hemorrhage, calcification, vascular invasion, margins, cystic components, or ductal dilation.
  • Tumors with >62.5 Hounsfield units and progressive delayed enhancement were associated with aggressive characteristics (P=0.03).

Conclusions:

  • Delayed phase CECT may reveal greater enhancement in pathologically aggressive SPNs compared to nonaggressive ones.
  • CECT offers potential for non-invasive differentiation of SPN aggressiveness.