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Unintended Consequences of Systemic and Ablative Oncologic Therapy in the Abdomen and Pelvis
Julie C Birch1, Gaurav Khatri1, Lori M Watumull1
1From the Department of Radiology (J.C.B., G.K., L.M.W., J.R.L.) and Department of Internal Medicine, Division of Hematology/Oncology (Y.E.A.), University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390.
Abstract:
Human cancers are genetically complex and diverse. Although advances in oncologic therapy aim to define and target unique steps in carcinogenesis, oncologists often rely on less discriminate anticancer therapies that have consequences for normal tissues. Even many of the so-called targeted therapies currently employed can adversely affect normal cells, leading to complications that necessitate dose reductions or cessation of specific therapies. This article explores the unintended consequences of currently employed systemic and ablative anticancer therapies that might manifest at imaging examinations of the abdomen and pelvis, including cytotoxic, molecular targeted, and immunologic agents; ablation; and hematopoietic stem cell transplant. Each of these treatments can have both major and minor unintended effects in the targeted organ(s), in local or adjacent structures, or at distant sites. Timely detection and reporting of adverse consequences of anticancer therapies by the astute imager can result in critical treatment modifications and/or lifesaving interventions; therefore, knowledge of these unintended effects is paramount for radiologists interpreting the results of imaging examinations in cancer patients. ©RSNA, 2018.
Insights
Anticancer therapies, including targeted and ablative treatments, can cause unintended side effects in normal tissues. Radiologists must recognize these imaging findings to aid treatment adjustments and improve patient outcomes.
Area of Science:
- Oncology
- Radiology
- Medical Imaging
Background:
- Human cancers exhibit genetic complexity, often necessitating diverse therapeutic approaches.
- Current oncologic therapies, while advancing, can impact normal tissues, leading to dose modifications or treatment cessation.
- Understanding unintended treatment effects is crucial for managing cancer patients.
Purpose of the Study:
- To explore the unintended consequences of systemic and ablative anticancer therapies on abdominal and pelvic imaging.
- To highlight the importance of recognizing these adverse effects for patient management.
- To emphasize the role of radiologists in identifying and reporting treatment-related complications.
Main Methods:
- Review of imaging manifestations of cytotoxic, molecular targeted, and immunologic anticancer agents.
- Analysis of imaging findings related to ablation and hematopoietic stem cell transplantation.
- Discussion of potential adverse effects across various anatomical sites.
Main Results:
- Anticancer therapies can cause major and minor unintended effects in targeted organs, adjacent structures, and distant sites.
- Imaging findings associated with chemotherapy, targeted therapy, immunotherapy, ablation, and stem cell transplant are presented.
- Diverse adverse effects necessitate careful radiologic interpretation.
Conclusions:
- Radiologists play a vital role in detecting and reporting unintended consequences of anticancer therapies.
- Knowledge of these adverse effects can lead to critical treatment modifications and lifesaving interventions.
- Accurate interpretation of imaging in cancer patients receiving therapy is paramount for optimal care.
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