Dear Readers,
The therapeutic landscape of locally advanced colon cancer (LACC) is rapidly evolving, driven by growing evidence supporting the use of neoadjuvant treatment strategies, including chemotherapy, chemoradiotherapy, and immunotherapy. These emerging approaches have shown considerable promise in improving patient outcomes by enabling tumor downstaging, reducing tumor burden, and increasing the likelihood of complete surgical resection.
As treatment paradigms continue to evolve, the role of CT in the diagnostic work-up of LACC has also been redefined. Can CT provide the level of diagnostic accuracy and staging reliability required to support treatment planning? More specifically, can it accurately identify those patients who are most likely to benefit from neoadjuvant therapies?
These and other clinically relevant questions are explored in a new Edu-Slides contribution by Dr. Masci and Prof. Laghi, who provide a comprehensive review of the current evidence regarding the role of CT across the different clinical presentations of LACC. Drawing on a large body of recent high-quality literature, the authors critically examine the diagnostic performance of CT by detailing its accuracy, sensitivity, and specificity in assessing local tumor extension, high-risk imaging features and metastatic disease, and clearly illustrate both its strengths and current limitations.
The first of the two featured scientific papers retrospectively evaluates the diagnostic performance of CT, MRI, and endorectal ultrasound (ERUS) for the preoperative staging of colon and rectal cancers, comparing the imaging findings with the histopathological results. The second article presents a comprehensive meta-analysis assessing the diagnostic accuracy of CT for the preoperative staging of primary colon cancer in a large patient population, providing further evidence of its ability to identify LACC and its associated high-risk features.
Finally, the two clinical cases presented below illustrate the value of contrast-enhanced CT in accurately defining tumor location and assessing both regional and distant disease spread, with imaging findings consistently confirmed by histopathology. Together, they highlight the pivotal role of integrating clinical, radiological, and pathological information to achieve accurate tumor staging, optimize prognostic assessment, and support appropriate treatment decision-making.
As always, we welcome suggestions for future Newsletter topics. Please send your proposals to us at editorial@mdct.net.
From the MDCT.net team
