Related Experiment Video
Updated: Jun 25, 2026

Surgical Robot-Assisted Transanal Specimen Extraction Radical Sigmoidectomy Without an Auxiliary Abdominal Incision
Published on: June 13, 2025
Unusual sized cecal mass presenting without obstruction: a case report
Ali R Elyassi1, Kevin Lin-Hurtubise, Ronald Gagliano
1Postgraduate Resident Year2, Department of Oral and Maxillofacial Surgery, Tripler Army Medical Center, Honolulu, HI, USA. Ali.Elyassi@amedd.army.mil.
Background:
Colorectal cancer (CRC) is a common and lethal disease with thousands of new cases of large bowel cancer diagnosed in the United States each year. Colorectal cancer frequently causes obstruction of the large bowel. Cases of obstructions and perforations have been documented with masses well below 6 cm in diameter. Obstruction and/or perforation are important predictors of prognosis with respect to colorectal carcinomas.
Case Presentation:
The following is the presentation of an unusual case of a 13 x 12 x 16 cm colonic adenocarcinoma without any signs of obstruction or perforation.
Conclusion:
Perioperative mortality rates for colorectal cancer with obstruction have been documented anywhere from 5% to 47.6%, making obstruction an important predictive factor in long-term patient survival. Although a correlation between obstruction and patient outcome has been determined, a correlation between colorectal tumor size/staging and obstruction has yet to be investigated.
Related Concept Videos
Assessment of the Rectum and Anus
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Appendicitis
Intestinal Obstruction I: Introduction
Appendicitis-I: Introduction
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
Intestinal Obstruction II: Pathophysiology
Pyloric Obstruction