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Published on: October 29, 2014
Late Bleeding Episodes Following Intestinal Transplantation: It Is Not Always Rejection or Infection
Harveen Singh1, Lakshmi Selvarajan1, Sik-Yong Ong1
1From the Liver Unit, Birmingham Children's Hospital, Birmingham, United Kingdom.
Insights
Ectopic varices, abnormal abdominal veins, can cause bleeding in children and liver transplant patients. This rare complication requires excluding other causes like rejection or infection before considering portal hypertension.
Area of Science:
- Gastroenterology and Hepatology
- Transplant Surgery
- Pediatric Medicine
Background:
- Ectopic varices are portosystemic venous collaterals found outside the cardioesophageal region, reported in 5% of pediatric variceal bleeding cases.
- Bleeding from ectopic varices is a rare but serious complication in liver-intestinal transplant recipients, typically occurring years post-transplant.
- Identifying the cause of bleeding in these patients is critical, with common etiologies like rejection or infection needing exclusion first.
Observation:
- Liver-intestinal transplant patients can present with ectopic variceal bleeding years after transplantation.
- This complication is a consequence of portal hypertension.
- Other causes of bleeding, such as organ rejection or infection, are more frequent and must be ruled out.
Findings:
- Ectopic variceal bleeding in post-liver transplant patients is a seldom-reported complication.
- Portal hypertension is the underlying cause of ectopic varices in this context.
- Differential diagnoses include blocked portacaval shunts or residual native liver disease.
Implications:
- This highlights the importance of considering ectopic varices in the differential diagnosis of gastrointestinal bleeding in liver transplant recipients.
- Further investigation into the management and long-term outcomes of ectopic varices post-transplantation is warranted.
- Accurate diagnosis is crucial for appropriate treatment and improved patient outcomes.
Abstract:
Ectopic varices have been reported in 5% of children presenting with variceal bleeding and are defined as portosystemic venous collaterals occurring anywhere in the abdomen except in the cardioesophageal region. The liver-intestinal transplant or isolated liver-intestinal transplant patient presenting several years post-transplant with ectopic variceal bleeding as a consequence of portal hypertension is a seldom reported complication. Etiologies such as rejection or infection are a more common source of bleeding, and only after excluding these can differentials such as portal hypertension secondary to a blocked portacaval shunt or native liver disease be considered.
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