Portal Dynamics After Living Donor Liver Transplant in Pediatric Recipients: A 10-Year Follow-Up Retrospective Study

Chi Cheng Chen, Hsin You Ou, Leo Leung Chit Tsang, Yu Fan Cheng, Chao Long Chen, Tai Yi Chen*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review


BACKGROUND: It may be difficult for pediatric patients to evaluate the impact of liver transplantation (LT) on splenomegaly due to the natural growth course. The long-term dynamics of portal vein (PV) size and PV flow after LT in pediatric patients are unclear. We aimed to evaluate the long-term transition of the splenic size, PV size, and PV flow velocity in pediatric patients who underwent successful living donor liver transplantation (LDLT) and survived >10 years.

METHODS: From October 2004 to December 2010, 39 pediatric patients (25 boys; 14 girls) underwent LDLT, received pre-LDLT and post-LDLT computed tomography scans and long-term ultrasound sonography follow-up, and survived >10 years without additional intervention at our institution. We analyzed the short- to mid-term and long-term impact of LDLT on splenic size, PV size, and PV flow velocity over time.

RESULTS: The PV diameter increased throughout the 10-year follow-up (P < .001). The PV flow velocity increased 1 day after LDLT (P< .001); proceeded to decrease 3 days after LDLT, reaching a low point 6 to 9 months after LDLT; and remained stable throughout the 10-year follow-up. Regression of the splenic volume at 6 to 9 months after LDLT (P < .001) was noted. However, the splenic size steadily increased on long-term follow-up.

CONCLUSIONS: Although LDLT has a significant short-term reduction effect on splenomegaly, the long-term transitional trend of the splenic size and PV diameter may increase along with children's growth. The PV flow reached a stable status 6 to 9 months after LDLT and remained so until 10 years after LDLT.

Original languageEnglish
Pages (from-to)1638-1643
Number of pages6
JournalTransplantation Proceedings
Issue number7
StatePublished - 09 2023

Bibliographical note

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  • Male
  • Female
  • Child
  • Humans
  • Liver Transplantation/adverse effects
  • Follow-Up Studies
  • Living Donors
  • Retrospective Studies
  • Splenomegaly/diagnostic imaging
  • Portal Vein/diagnostic imaging
  • Treatment Outcome


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