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Related Concept Videos

Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
242

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Related Experiment Video

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Pretargeted Radioimmunotherapy Based on the Inverse Electron Demand Diels-Alder Reaction
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Radiological Surveillance Post-Curative Colorectal Cancer Resection: Is There a Need for a Targeted Protocol?

Mahmoud Abdel-Dayem1, Lydia Maw1, Edward Green1

  • 1Colorectal Surgery, Prince Charles Hospital, Cardiff, GBR.

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|March 31, 2021
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Summary
This summary is machine-generated.

A flexible surveillance approach for colorectal cancer patients after surgery, based on risk factors, can improve early detection of recurrence and optimize resource use. This personalized strategy aims to enhance patient safety and outcomes by tailoring follow-up scans.

Keywords:
colorectal cancerfollow upradiological imaging

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Area of Science:

  • Oncology
  • Radiology
  • Surgical Oncology

Background:

  • The optimal frequency of radiological surveillance after colorectal cancer resection is debated, balancing radiation exposure and cost against early detection benefits.
  • Current guidelines, like NICE 2018, suggest two surveillance computed tomography (CT) scans within three years but lack specific timing recommendations.
  • There is a need for a more personalized surveillance strategy to maximize metastasis detection while minimizing resource consumption and patient risk.

Purpose of the Study:

  • To evaluate the value of an evidence-based, flexible surveillance protocol for colorectal cancer patients.
  • To determine if tailoring surveillance based on individual patient risk factors can improve early detection of recurrent disease.
  • To optimize resource utilization and patient safety in post-operative surveillance.

Main Methods:

  • A retrospective study analyzed five years of data from patients who underwent curative colorectal cancer resection.
  • Data included post-operative histology reports and three-year surveillance CT scan reports.
  • A comprehensive database was constructed to correlate pathological factors with recurrence patterns.

Main Results:

  • Of 179 patients, 66 (36.9%) developed recurrence. Recurrence rates significantly increased with higher tumor stages (T1: 23.5% to T4: 66%) and lymph node involvement (N0: 22% to N2: 73.5%).
  • Median time to recurrence was shorter in advanced stages (T4: 23 months, N2: 14 months) and for patients with extramural vascular invasion (EMVI) (17 months).
  • Positive EMVI status strongly correlated with recurrence (71.7% vs. 19.3%) and earlier detection.

Conclusions:

  • A flexible radiological surveillance protocol for colorectal cancer, guided by pathological prognostic factors, is more effective.
  • This personalized approach enhances resource utilization and improves patient outcomes by enabling timely detection of recurrence.
  • Tailoring surveillance based on risk factors like tumor stage, nodal status, and EMVI is crucial for optimizing patient care.