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Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...
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Related Experiment Video

Updated: Feb 27, 2026

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Sigmoid Volvulus in a Healthy Adolescent Male.

Joseph A Inger1, Caitlin Azzo2, Kristin H Dwyer2

  • 1Warren Alpert Medical School of Brown University, Providence, RI.

Rhode Island Medical Journal (2013)
|February 25, 2026
PubMed
Summary
This summary is machine-generated.

This case study details a rare instance of sigmoid volvulus in a 15-year-old male presenting with abdominal pain. Early diagnosis and endoscopic detorsion were crucial for managing this surgical emergency.

Keywords:
adolescent abdominal paincomputed tomographycross-sectional imagingendoscopic detorsiongastrointestinal volvuluslarge bowel obstructionpediatric sigmoid volvuluspediatric surgery

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Area of Science:

  • Pediatric Gastroenterology
  • Abdominal Surgery

Background:

  • Adolescent abdominal pain can present with nonspecific symptoms.
  • Sigmoid volvulus is an uncommon cause of large bowel obstruction in pediatric patients.

Purpose of the Study:

  • To report a rare case of sigmoid volvulus in a previously healthy adolescent.
  • To emphasize the diagnostic challenges and management strategies for pediatric sigmoid volvulus.

Main Methods:

  • Case presentation of a 15-year-old male with progressive abdominal pain.
  • Diagnostic imaging including cross-sectional imaging to identify sigmoid volvulus.
  • Urgent endoscopic detorsion performed by pediatric surgery and gastroenterology specialists.

Main Results:

  • Cross-sectional imaging confirmed sigmoid volvulus without signs of perforation or ischemia.
  • Endoscopic detorsion successfully resolved the obstruction.
  • The patient's symptoms resolved post-procedure.

Conclusions:

  • Pediatric sigmoid volvulus requires a high index of suspicion despite benign initial findings.
  • Multidisciplinary collaboration and prompt imaging are vital for timely diagnosis and intervention.
  • This case underscores the importance of a broad differential diagnosis in pediatric abdominal emergencies.