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Solitary liver cysts in children: not always so simple
Tim N Rogers1, Helen Woodley, William Ramsden
1Children's Liver and GI Unit, Gledhow Wing, St. James's University Hospital, LS9 7TF Leeds, UK.
Insights
Pediatric liver cysts are uncommon, with simple ones rarely needing surgery. However, surgeons must recognize diverse, potentially life-threatening cyst types in children for proper management.
Area of Science:
- Pediatric Surgery
- Hepatology
- Medical Imaging
Background:
- Liver cysts in children are rare, often simple and asymptomatic.
- A diverse range of pathologies can present as solitary liver cysts in pediatric patients.
- Some liver cysts in children can be life-threatening, necessitating prompt diagnosis and intervention.
Purpose of the Study:
- To analyze the clinical, radiologic, and pathologic features of solitary liver cysts in children.
- To differentiate between simple and complex liver cysts in the pediatric population.
- To highlight the spectrum of liver cyst pathologies in children and guide appropriate management.
Main Methods:
- Prospective recording of children with solitary liver cysts over an 8-year period.
- Exclusion of children with isolated extrahepatic choledochal cysts and polycystic disease.
- Analysis of clinical, imaging (ultrasound, MRI/MRCP, radionuclide scan), and pathological data.
Main Results:
- Twenty-one children with solitary liver cysts were identified, with 11 detected prenatally and 10 postnatally.
- Simple cysts were often small, asymptomatic, and identifiable via imaging; only 2/12 required surgery.
- Nine children had other cyst pathologies, some life-threatening, requiring resection in 7 cases (e.g., choledochal, mesenchymal hamartoma, hydatid cysts).
Conclusions:
- Simple solitary nonparasitic liver cysts in children rarely require surgical intervention.
- Pediatric surgeons must maintain awareness of the broad differential diagnosis for liver cysts in children.
- Prompt recognition and appropriate treatment are crucial for managing potentially severe pediatric liver cyst pathologies.
Aim:
Liver cysts in children are uncommon. Many are simple and solitary and do not require intervention. However, this series demonstrates a broad range of potential pathologies, some of which are life-threatening.
Methods:
All children referred to our unit during an 8-year period (1998-2005) and found to have a solitary liver cyst were prospectively recorded. Clinical, radiologic, and pathologic features were analyzed. Children with an isolated extrahepatic choledochal cyst and polycystic disease were excluded.
Results:
Twenty-one children with a liver cyst were identified. Two had undergone unsuccessful surgical intervention before referral. There were 11 prenatally detected cysts. Median gestational age at detection was 22 weeks (19-35 weeks); only 1 was specifically characterized as a liver cyst prenatally. Six of these required surgery: 2 large simple cysts, 2 intrahepatic choledochal cysts, 1 giant complex biliary cyst causing respiratory distress, and 1 ciliated hepatic foregut cyst. Of the 5 cysts remaining under ultrasound surveillance, 4 decreased in size or resolved. In 10 children presenting between birth and 15.8 years, a liver cyst was diagnosed postnatally: 3 huge cystic mesenchymal hamartomas, 1 type V choledochal cyst, 1 hydatid cyst, and 5 simple cysts. Four of these required surgical resection. Simple cysts tended to be small and could be distinguished from other pathologies using a combination of imaging techniques (ultrasound, magnetic resonance imaging/magnetic resonance cholangiopancreatography [MRCP], radionuclide scan). Only 2 of 12 children with "simple" cysts required surgery for symptoms. However, a wide range of other cyst pathologies were found in 9 children, and although none was malignant, some were life-threatening and 7 required resection.
Conclusions:
Simple solitary nonparasitic liver cysts rarely cause symptoms or require surgery, but the pediatric surgeon should be aware of the wide range of other types of liver cyst in children to ensure appropriate treatment.
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