Quiz|Articles|February 27, 2024

Image IQ Quiz: Pediatric Patient with Chronic Constipation and Abdominal Distension

Review the case and test your knowledge to make the correct diagnosis.

Case submitted by RiT via radRounds.

A pediatric patient presents with chronic constipation, abdominal distension, and failure to pass meconium shortly after birth. An abdominal X-ray reveals a dilated colon with a "transition zone" seen at the rectosigmoid junction. What is the most likely diagnosis as indicated by the imaging findings?

Newsletter

Stay at the forefront of radiology with the Diagnostic Imaging newsletter, delivering the latest news, clinical insights, and imaging advancements for today’s radiologists.

Subscribe Now!

Related Content

Latest CME

Community Oncology Connections™: Beyond the Basics—Revolutionizing Advanced Prostate Cancer Management With PSMA-Targeted Therapies | Texas
Video

Community Oncology Connections™: Beyond the Basics—Revolutionizing Advanced Prostate Cancer Management With PSMA-Targeted Therapies | Texas

Jeremie Calais, MD, PhD; Qian Qin, MD

View more
Inaugural Brain & Spine Metastases Conference: Evolving Practice and Emerging Therapies
In-Person Event

Inaugural Brain & Spine Metastases Conference: Evolving Practice and Emerging Therapies

January 22, 2026

Register now!
2nd Annual Hawaii Cancer Conference
In-Person Event

2nd Annual Hawaii Cancer Conference

January 24-25, 2026

Register now!
23rd Annual Winter Lung Cancer Conference®
In-Person Event

23rd Annual Winter Lung Cancer Conference®

January 23-25, 2026

Register now!
43rd Annual Miami Breast Cancer Conference®
In-Person Event

43rd Annual Miami Breast Cancer Conference®

March 5-8, 2026

Register now!
19th Annual New York GU Cancers Congress™
In-Person Event

19th Annual New York GU Cancers Congress™

March 13-14, 2026

Register now!
Mastering Advances in Managing Unresectable and Metastatic NSCLC—Immunotherapy, Targeted Therapies, and Emerging Strategies
Video

Mastering Advances in Managing Unresectable and Metastatic NSCLC—Immunotherapy, Targeted Therapies, and Emerging Strategies

Marina Chiara Garassino, MD; Sarah Goldberg, MD, MPH; Biagio Ricciuti, MD, PhD

View more
Cases and Conversations™: Redefining Treatment Pathways in Low-Grade Serous Ovarian Cancer
In-Person + Virtual Event

Cases and Conversations™: Redefining Treatment Pathways in Low-Grade Serous Ovarian Cancer

April 12, 2026

View more
Cases & Conversations™: Expert Perspectives on Leveraging Recent Advances to Transform SCLC Treatment
Video

Cases & Conversations™: Expert Perspectives on Leveraging Recent Advances to Transform SCLC Treatment

Jacob Sands, MD; Anne Chiang, MD, PhD; Alissa J. Cooper, MD

View more
Community Practice Connections™: Empowering Interventional Radiologists in the Emerging Era of Oncolytic Immunotherapies for Melanoma
Multimedia

Community Practice Connections™: Empowering Interventional Radiologists in the Emerging Era of Oncolytic Immunotherapies for Melanoma

Yana G. Najjar, MD; Douglas B. Johnson, MD, MSCI; Rahul A. Sheth, MD, FSIR

View more
17th Annual International Symposium on Ovarian Cancer and Other Gynecologic Malignancies™
Virtual Event

17th Annual International Symposium on Ovarian Cancer and Other Gynecologic Malignancies™

May 16, 2026

View more
(CME Credit) Advancing Outcomes in Limited-Stage Small Cell Lung Cancer: From Evidence to Practice
Video

(CME Credit) Advancing Outcomes in Limited-Stage Small Cell Lung Cancer: From Evidence to Practice

Lauren Averett Byers, MD; Percy Lee, MD, FASTRO; Erminia Massarelli, MD, PhD, MS

View more
PER Tumor Board®: Applying Recent Advances to Transform the Treatment Paradigm in SCLC—Expert Perspectives on New Approvals and Emerging Strategies
Video

PER Tumor Board®: Applying Recent Advances to Transform the Treatment Paradigm in SCLC—Expert Perspectives on New Approvals and Emerging Strategies

Jonathan W. Goldman, MD; Percy Lee, MD, FASTRO; Erminia Massarelli, MD, PhD, MS; Misty D. Shields, MD, PhD

View more
Radioligand Therapy 101: The Science Behind the Strategy
Multimedia

Radioligand Therapy 101: The Science Behind the Strategy

Jeremie Calais, MD, PhD; Tanya B. Dorff, MD; Scott T. Tagawa, MD, MS, FACP, FASCO

View more
Ready for Radioligand Therapy? Patient Selection and Sequencing Simplified
Multimedia

Ready for Radioligand Therapy? Patient Selection and Sequencing Simplified

Jeremie Calais, MD, PhD; Tanya B. Dorff, MD; Scott T. Tagawa, MD, MS, FACP, FASCO

View more
BURST CME™ Resource Center: Integrating Novel PSMA-Directed Radioligand Approaches for Diagnosis and Management of Prostate Cancer
Multimedia

BURST CME™ Resource Center: Integrating Novel PSMA-Directed Radioligand Approaches for Diagnosis and Management of Prostate Cancer

Jeremie Calais, MD, PhD; Tanya B. Dorff, MD; Nerina McDonald, MSPAS, PA-C; Scott T. Tagawa, MD, MS, FACP, FASCO

View more
Working Together: Overcoming Barriers to Optimize Outcomes in Patients Treated With Radioligand Therapy Through Multidisciplinary Care
Multimedia

Working Together: Overcoming Barriers to Optimize Outcomes in Patients Treated With Radioligand Therapy Through Multidisciplinary Care

Jeremie Calais, MD, PhD; Tanya B. Dorff, MD; Nerina McDonald, MSPAS, PA-C; Scott T. Tagawa, MD, MS, FACP, FASCO

View more
Community Practice Connections™: Beyond the Basics— Revolutionizing Advanced Prostate Cancer Management With PSMA-Targeted Therapies
Multimedia

Community Practice Connections™: Beyond the Basics— Revolutionizing Advanced Prostate Cancer Management With PSMA-Targeted Therapies

Jeremie Calais, MD, PhD; Scott T. Tagawa, MD, MS, FACP, FASCO

View more
2026 International Symposium of Gastrointestinal Oncology (ISGIO)
In-Person Event

2026 International Symposium of Gastrointestinal Oncology (ISGIO)

October 2-3, 2026

Register now!
26th Annual International Lung Cancer Congress
Video

26th Annual International Lung Cancer Congress

Roy S. Herbst, MD, PhD; Sandip Patel, MD, FASCO; Heather A. Wakelee, MD, FASCO

View more
Enhancing Prostate Cancer Outcomes – The Role of PSMA and Targeted Treatment Strategies
Video

Enhancing Prostate Cancer Outcomes – The Role of PSMA and Targeted Treatment Strategies

Ana Kiess, MD, PhD; Erin Grady, MD, CCD, FACNM, FSNMMI; Himanshu Nagar, MD, MS; Scott T. Tagawa, MD, MS, FASCO, FACP

View more
44th Annual CFS®: Innovative Cancer Therapy for Tomorrow™
In-Person Event

44th Annual CFS®: Innovative Cancer Therapy for Tomorrow™

November 11-13, 2026

Register now!
21st Annual New York Lung Cancers Symposium®
In-Person Event

21st Annual New York Lung Cancers Symposium®

November 14, 2026

Register now!
9th Annual School of Nursing Oncology™
Video

9th Annual School of Nursing Oncology™

Beth Faiman, PhD, MSN, APN-BC, BMTCN, AOCN, FAAN, FAPO; Beth Sandy, MSN, CRNP, FAPO; Lindsay Adkins, MSN, FNP-BC, BMTCN; Jeneth Aquino, DNP, FNP-BC; Casey Gormley, MSN, FNP-C, AOCNP; Heather J. Jackson, PhD, FNP-BC; Kelsey Martin, AG-ACNP-BC, AOCNP; Nerina T. McDonald, PA-C; Lauren Verity Moore, DNP, MSN, AGACNP-BC; Faith A. Mutale, DNP, CRNP; Tiffany Richards, PhD, ANP-BC, AOCNP; Emily Skotte, DNP, MSN, ACNP-BC; Leslie Smith, DNP, RN, APRN-CNS, AOCNS, BMTCN; Saneese Stephen, PA-C, MPAS; Sara M. Tinsley-Vance, PhD, APRN, AOCN

View more