According to Gram Research analysis, an 11-year-old girl with DiGeorge syndrome developed intestinal lymphangiectasia—enlarged lymphatic vessels in the small intestine—that caused severe protein loss and bleeding. After medical treatments failed, surgeons sealed off the damaged duodenal tissue, which completely resolved her bleeding and eliminated her need for blood transfusions within one week. This case report shows that DiGeorge syndrome can affect intestinal lymphatic vessels, a rare complication doctors should recognize when standard treatments don’t work.
A case report describes an 11-year-old girl with DiGeorge syndrome who developed a serious intestinal condition called lymphangiectasia, which caused her body to lose large amounts of protein through her digestive system. This led to severe swelling, low blood protein levels, and bleeding in her intestines. After several treatments didn’t work, doctors performed surgery to seal off damaged lymphatic vessels in her small intestine, which finally stopped the bleeding and resolved her need for blood transfusions. This case shows that DiGeorge syndrome can affect the lymphatic system in the intestines, a rare complication that doctors should watch for.
Key Statistics
A 2026 case report in the European Heart Journal documented an 11-year-old girl with DiGeorge syndrome who developed intestinal lymphangiectasia causing severe protein loss and gastrointestinal bleeding that resolved completely after surgical repair of the duodenum.
In this case, surgical oversewing of duodenal lymphatic tissue eliminated transfusion dependence within one week, suggesting targeted lymphatic disruption may be effective for protein-losing enteropathy resistant to medical management.
The patient underwent multiple diagnostic procedures including endoscopy, biopsies, and capsule endoscopy before intestinal lymphangiectasia was identified as the cause of her protein-losing enteropathy and gastrointestinal bleeding.
The Quick Take
- What they studied: How a rare intestinal lymphatic condition developed in a child with DiGeorge syndrome and how surgery helped treat it
- Who participated: One 11-year-old girl with DiGeorge syndrome (a genetic condition affecting heart and immune system development) who had previously had heart surgery to repair an interrupted aortic arch
- Key finding: Intestinal lymphangiectasia (enlarged lymphatic vessels in the small intestine) caused severe protein loss and bleeding that improved dramatically after surgical repair of the duodenum
- What it means for you: Doctors treating DiGeorge syndrome patients should consider lymphatic intestinal problems as a possible cause of swelling, low protein levels, and digestive bleeding. While this is rare, recognizing it early may help guide treatment decisions. This finding applies mainly to medical professionals rather than the general public.
The Research Details
This is a case report, which means doctors documented the medical story of one patient in detail. The 11-year-old girl came to the hospital with progressive swelling throughout her body, very low blood protein levels, and signs of protein loss in her stool. Doctors performed multiple tests including endoscopy (a camera to look inside the digestive tract), blood tests, and stool analysis to understand what was happening.
When initial biopsies didn’t show the problem, doctors used capsule endoscopy—a small camera the patient swallows that takes pictures as it travels through the small intestine. This revealed enlarged lymphatic vessels (lymphangiectasia) in the jejunum and ileum (parts of the small intestine). The patient tried several medical treatments including special diet, albumin infusions, diuretics, immunoglobulin therapy, and rituximab (a medication that affects immune cells), but nothing stopped the protein loss and bleeding.
Finally, surgeons performed abdominal surgery and sealed off (oversewed) the damaged duodenal tissue. Within one week, the patient’s blood counts improved and she no longer needed blood transfusions.
Case reports are important for identifying rare complications of known diseases. DiGeorge syndrome is usually associated with heart problems, but this case shows that the lymphatic system in the intestines can also be affected. By documenting this unusual presentation, doctors can better recognize similar cases in other patients and know to look for lymphatic problems when standard treatments don’t work.
As a case report of a single patient, this study cannot prove that lymphangiectasia causes protein loss in all DiGeorge patients—it only shows it happened in this one case. However, the detailed documentation, multiple diagnostic tests, and clear improvement after surgery make this a credible observation. The findings are most useful for alerting other doctors to watch for this rare complication rather than making broad treatment recommendations.
What the Results Show
The patient presented with generalized swelling (edema), very low blood albumin (a key protein), and elevated fecal alpha-1 antitrypsin (a marker showing protein loss in stool). Initial endoscopy showed widespread swelling in the duodenum and colon. After several biopsies didn’t reveal the cause, capsule endoscopy identified the true problem: long segments of enlarged lymphatic vessels in the jejunum and ileum.
The patient’s condition was severe and resistant to standard treatments. She received a low-fat diet (which reduces lymphatic fluid production), regular albumin infusions to replace lost protein, diuretics to reduce swelling, subcutaneous immunoglobulin injections, and rituximab therapy (both oral and intravenous). Despite all these interventions, she continued losing protein and developed gastrointestinal bleeding, making her dependent on blood transfusions.
When mesenteric embolization (a minimally invasive procedure to block blood vessels) failed, surgeons performed open abdominal surgery. They oversewed (sealed) the duodenal tissue where the damaged lymphatics were located. This targeted surgical approach was remarkably effective: within one week, the patient’s blood counts stabilized and her need for blood transfusions completely resolved.
The case demonstrates that DiGeorge syndrome’s effects extend beyond the heart and immune system to include rare lymphatic manifestations. The patient’s condition shows how elevated central venous pressure from heart disease can drive chyle (lymphatic fluid) leakage into the intestines, but also how primary lymphatic vessel abnormalities can independently cause severe protein loss. The successful surgical outcome suggests that when medical management fails, targeted disruption of abnormal peri-duodenal lymphatics may be an effective treatment strategy.
DiGeorge syndrome is well-known for causing congenital heart disease and immune deficiencies, but intestinal lymphangiectasia as a complication is rarely reported. This case expands the recognized phenotype (observable characteristics) of DiGeorge syndrome to include lymphatic system involvement. It also provides an example of how lymphatic problems can cause protein-losing enteropathy through a different mechanism than previously emphasized in the literature.
This is a single case report, so the findings cannot be generalized to all DiGeorge syndrome patients. We don’t know how common this lymphatic complication actually is. The patient’s specific anatomy, genetics, and previous heart surgery may have contributed to her particular presentation. Additionally, the case doesn’t establish whether surgery is the best first-line treatment or should be reserved for cases that fail medical management. Long-term follow-up data beyond the immediate post-surgical period is not provided.
The Bottom Line
For medical professionals: Consider intestinal lymphangiectasia in DiGeorge syndrome patients presenting with protein-losing enteropathy, especially when standard treatments fail. Capsule endoscopy may be valuable for diagnosis when initial biopsies are non-diagnostic. Targeted surgical repair of abnormal lymphatic tissue may be effective when medical management is unsuccessful. For patients and families: If you have DiGeorge syndrome and develop unexplained swelling, low protein levels, or digestive bleeding despite treatment, ask your doctor about lymphatic complications and whether specialized imaging like capsule endoscopy might help identify the cause.
This finding is most relevant to cardiologists, gastroenterologists, and immunologists treating DiGeorge syndrome patients. Pediatricians managing children with DiGeorge syndrome should be aware of this rare complication. Patients with DiGeorge syndrome who develop protein-losing enteropathy should know that lymphatic problems are a possible cause. This case is less relevant to the general population but important for medical education and rare disease awareness.
In this case, surgical intervention produced dramatic improvement within one week. However, this represents one patient’s experience. The timeline for diagnosis may be lengthy (this patient had multiple non-diagnostic biopsies before capsule endoscopy identified the problem). Long-term outcomes beyond the immediate post-surgical period are not documented in this report.
Frequently Asked Questions
What is DiGeorge syndrome and what problems does it cause?
DiGeorge syndrome is a genetic condition where parts of the heart, immune system, and other organs don’t develop normally before birth. It commonly causes heart defects, immune deficiencies, and low calcium levels. This case shows it can rarely affect intestinal lymphatic vessels, causing protein loss and bleeding.
What is protein-losing enteropathy and why is it serious?
Protein-losing enteropathy means the intestines leak large amounts of protein into stool instead of absorbing it into the bloodstream. This causes low blood protein levels, leading to swelling, weakness, and poor immune function. It can be life-threatening if severe and untreated.
How is intestinal lymphangiectasia diagnosed?
Diagnosis typically involves blood tests showing low albumin, stool tests showing elevated protein loss, and imaging. Capsule endoscopy (swallowing a small camera) is particularly useful for visualizing enlarged lymphatic vessels in the small intestine that regular endoscopy might miss.
When should surgery be considered for protein-losing enteropathy?
Surgery may be considered when medical treatments like special diets, albumin infusions, and medications fail to control protein loss and complications like bleeding develop. In this case, targeted surgical repair of abnormal lymphatic tissue was successful after other therapies didn’t work.
Can DiGeorge syndrome patients develop other rare complications besides heart problems?
Yes, DiGeorge syndrome has a highly variable presentation. While heart defects and immune problems are most common, this case demonstrates that rare lymphatic complications affecting the intestines can occur, highlighting the importance of thorough evaluation when patients develop unexpected symptoms.
Want to Apply This Research?
- For patients with DiGeorge syndrome or protein-losing enteropathy: Track daily weight (morning weigh-in), degree of swelling in legs/abdomen (rate 0-10), stool consistency and frequency, and any signs of bleeding. Log any transfusions, albumin infusions, or medication changes. This data helps doctors identify patterns and assess treatment effectiveness.
- Work with your medical team to maintain a low-fat diet if you have intestinal lymphangiectasia, as fat increases lymphatic fluid production. Use the app to log meals and track how different foods affect your symptoms. Set reminders for scheduled albumin infusions, immunoglobulin injections, or other treatments. Document any new symptoms like increased swelling or bleeding to report at appointments.
- Establish a baseline of your normal weight and swelling level, then track weekly changes. Monitor blood test results (albumin, protein levels) when available and log them in the app. Track transfusion frequency and volume—improvement would mean needing fewer transfusions. Create alerts for concerning symptoms (significant weight gain, new bleeding, severe swelling) that warrant immediate medical attention.
This case report describes one patient’s experience and should not be interpreted as medical advice or as establishing standard treatment for all DiGeorge syndrome patients. Intestinal lymphangiectasia is a rare complication. If you have DiGeorge syndrome or protein-losing enteropathy, consult with your cardiologist, gastroenterologist, or immunologist about your specific condition and treatment options. Do not make treatment decisions based solely on this case report. Medical decisions should be individualized based on your complete medical history, current symptoms, and professional medical evaluation.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.