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A retrospective study presented at the American Academy of Pediatrics meeting found that 80% of 84 patients aged 21 and younger with colorectal cancer had stage III or IV disease when diagnosed. The findings describe diagnostic challenges involving a rare cancer with nonspecific symptoms; they do not indicate that most teens with abdominal pain need cancer testing.
A retrospective study of 84 patients aged 21 and younger found that 80% had stage III or IV colorectal cancer at diagnosis, with a median of 12 weeks between symptom onset and diagnosis. Presented at the American Academy of Pediatrics annual meeting in San Diego, the study describes challenges in recognizing a rare cancer with often nonspecific symptoms in children and young adults.
The study authors, Erica Arnold, MD, of Nationwide Children’s Hospital and Danielle Cameron, MD, MPH, of Mass General Brigham Cancer Institute, discussed the results in an interview with MedPage Today. The report describes the work as a multicenter retrospective study. Its 84 patients were no older than 21; the supplied report does not give a study period or further breakdown of the group.
Arnold said the tumors in the cohort showed elevated rates of features including signet ring cells, mucin, and poorly differentiated histology compared with adult colorectal cancer. She said these findings may point to differences in disease biology in younger patients. In the cohort, those features were associated with high rates of advanced-stage disease and poor outcomes, although the report does not provide specific survival figures.
Cameron cautioned against testing every teenager with abdominal pain for cancer. She said clinicians should first take a careful history and perform an examination, using less invasive tests to investigate more common causes where appropriate. The researchers’ message is to keep cancer in mind when symptoms persist or do not fit the expected picture, rather than to treat ordinary abdominal pain as evidence of cancer.
Recognizing Persistent Symptoms
Because colorectal cancer is rare in children and adolescents, its symptoms may initially be attributed to more common conditions. In this cohort, most patients had advanced disease when diagnosed. The finding describes the stage at diagnosis among these patients and the potential difficulty of recognizing the cancer in this age group.
The results do not establish that delayed care caused the advanced stages. Earlier recognition could prompt evaluation, but the report also raises the possibility that tumor biology contributes to disease stage at diagnosis. Cameron advised families to seek medical attention for persistent symptoms and describe their duration and changes. She also said clinicians should consider the full clinical picture when assessing adolescents.
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A Rare Cancer in Young Patients
The study was presented at the American Academy of Pediatrics annual meeting in San Diego, and the findings were described in a MedPage Today interview with two of its authors. The report describes a diagnostic challenge: abdominal pain and other symptoms can be nonspecific, while colorectal cancer is uncommon in this age group. These factors can complicate decisions about further investigation.
The authors also said adolescents and college-age patients may not fit neatly into typical adult or pediatric diagnostic categories. Cameron gave the example of patients presenting with low back pain and initially seeing specialists such as rheumatologists or physical therapists, who may not be evaluating them for an underlying malignancy. The report does not say that such symptoms usually indicate cancer; it describes one possible route to diagnosis.
“Persistent symptoms should prompt a patient and their family to seek medical attention.”
— Danielle Cameron, MD, MPH, Mass General Brigham Cancer Institute
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Why Disease Was Advanced
The study cannot establish whether the 12-week median interval from symptoms to diagnosis contributed to advanced disease, whether aggressive tumor features were the main factor, or whether both played a role. Arnold said that distinction needs further study. The supplied report also does not specify how the 84 patients were selected, the study dates, or the range of symptoms across the cohort.
The findings describe a small group of young people who already had colorectal cancer; they do not estimate the chance that an adolescent with abdominal pain has the disease. Nor does the report give a recommended symptom duration, a screening strategy for teens, or evidence that a particular test would have changed outcomes.
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Further Study and Clinical Evaluation
The authors said further research is needed to clarify how diagnostic delay and tumor biology each contribute to advanced disease in young patients. The source report does not announce a planned follow-up study, a new screening guideline, or a change in clinical recommendations.
Cameron advised seeking medical attention when symptoms persist and said clinicians should assess the patient’s history and examination. Decisions about tests should be made with a qualified health professional, based on the individual’s symptoms and findings.
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Key Questions
Does abdominal pain mean a teenager may have colorectal cancer?
No. Colorectal cancer is rare in children and adolescents, and abdominal pain has many more common causes. The study does not show that pain alone predicts cancer.
What did the study find?
Among 84 patients aged 21 and younger with colorectal cancer, 80% had stage III or IV disease at diagnosis. The median time from symptoms to diagnosis was 12 weeks.
Should every teenager with abdominal pain have a colonoscopy?
No. Study author Danielle Cameron said that doing so would lead to overtesting or overtreatment. A health professional can assess symptoms and decide whether evaluation is needed.
When should a family seek medical attention?
Cameron said persistent symptoms should prompt a patient and family to seek medical attention. The report does not set a specific time threshold; families can describe the symptoms’ duration and any changes to a qualified clinician.
Why were so many cases advanced at diagnosis?
The study did not determine the cause. The authors said diagnostic delay, tumor biology, or both may have contributed, and further study is needed.
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