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Related Concept Videos

Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

Pharmacokinetics in Pediatric Patients: Drug Metabolism

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In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses...
97
Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test01:22

Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test

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In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess...
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Pharmacokinetics in Pediatric Patients: Drug Distribution01:17

Pharmacokinetics in Pediatric Patients: Drug Distribution

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Drug distribution in the pediatric population exhibits unique challenges and considerations due to the physiological differences between children, particularly neonates and infants, and adults. A crucial aspect of pediatric pharmacology is understanding how these differences impact the pharmacokinetics of various drugs, necessitating age-specific dosing strategies to ensure efficacy and safety.Neonates and infants have a higher total body water content, ~75%–90% of their body weight,...
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Diseases of the Liver and Gallbladder01:26

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Liver and gallbladder diseases are a significant health concern, with prominent conditions including cirrhosis, hepatitis, non-alcoholic fatty liver disease (NAFLD), and gallstones. Jaundice is a common manifestation of liver and biliary disease.
Cirrhosis is characterized by the scarring of hepatic lobules in the liver, which are replaced by fibrous tissue, affecting the liver's normal functioning. NAFLD, on the other hand, is caused by an excessive build-up of fat in the liver, not...
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Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption01:23

Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption

128
Understanding the physiological differences in the pediatric population is crucial for effective pharmacotherapy. Neonates, infants, and children exhibit significant variations in gastric pH, gastric emptying time, intestinal transit time, and biliary function. These variations profoundly affect oral drug absorption, necessitating a nuanced approach to pediatric dosing.Neonates present with a unique physiological profile, having a gastric pH greater than 4 and faster and more irregular gastric...
128
Pharmacokinetics in Pediatric Patients: Drug Excretion01:26

Pharmacokinetics in Pediatric Patients: Drug Excretion

120
In pediatric medicine, understanding the renal function and drug elimination nuances is crucial for administering safe and effective treatments. Newborns, in particular, display markedly slower renal functions than adults, profoundly affecting how drugs are cleared from their bodies. This slower drug clearance requires clinicians to extend the dosing intervals for many medications to prevent drug accumulation and toxicity while ensuring therapeutic efficacy.One key area where these adjustments...
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Updated: Nov 30, 2025

A Hepatocellular Cancer Patient-Derived Organoid Xenograft Model to Investigate Impact of Liver Regeneration on Tumor Growth
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Pediatric Liver Tumors: Updates in Classification.

Soo-Jin Cho1

  • 1Department of Pathology, University of California San Francisco, 1825 4th Street Room M2369, Box 4066, San Francisco, CA 94143, USA.

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|November 13, 2020
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Pediatric malignant liver tumors, including hepatoblastoma and hepatocellular carcinoma, show diverse histology. Accurate classification is crucial for effective management, aided by new molecular insights.

Keywords:
Fibrolamellar carcinomaHepatoblastomaHepatocellular carcinomaHepatocellular neoplasmNOS

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Area of Science:

  • Pediatric Oncology
  • Hepatobiliary Pathology
  • Molecular Diagnostics

Background:

  • Malignant primary liver tumors are rare in children.
  • Hepatoblastoma is the most common pediatric malignant liver tumor, exhibiting a broad histologic spectrum.
  • Hepatocellular carcinoma is the second most common, with overlapping features and hybrid tumors complicating classification.

Purpose of the Study:

  • To review the morphologic descriptions of pediatric malignant liver tumors.
  • To update on the evolving clinical context and classification of these neoplasms.
  • To present recent molecular advances aiding accurate tumor classification.

Main Methods:

  • Literature review of morphologic features.
  • Analysis of clinical context and management strategies.
  • Synthesis of recent molecular findings in pediatric liver tumors.

Main Results:

  • Detailed morphologic descriptions of hepatoblastoma and hepatocellular carcinoma.
  • Discussion of hybrid tumors and the provisional category of malignant hepatocellular neoplasm, not otherwise specified.
  • Integration of molecular data for improved diagnostic accuracy.

Conclusions:

  • Accurate classification of pediatric malignant liver tumors is critical for patient management.
  • Morphologic assessment combined with molecular advances enhances diagnostic precision.
  • Ongoing research is refining the understanding and classification of these rare childhood cancers.