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Related Concept Videos

Pharmacokinetics in Pediatric Patients: Drug Excretion01:26

Pharmacokinetics in Pediatric Patients: Drug Excretion

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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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Pharmacokinetics in Pediatric Patients: Drug Distribution01:17

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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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Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
The red bone marrow is a soft, spongy tissue nestled in the interior of long bones such as the humerus and femur. It is the site...
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Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

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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...
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Secondary Lymphoid Organs01:15

Secondary Lymphoid Organs

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Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
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Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption01:23

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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...
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Pediatric Extranodal Lymphoma.

Ellen M Chung1, Michael Pavio2

  • 1Department of Radiology and Radiological Sciences, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, USA; Pediatric Radiology Section, American Institute for Radiologic Pathology, Silver Spring, MD 20190, USA.

Radiologic Clinics of North America
|June 7, 2016
PubMed
Summary
This summary is machine-generated.

Pediatric non-Hodgkin lymphoma (NHL) is aggressive and often widespread. Researchers are exploring alternative imaging methods to reduce radiation exposure in children undergoing diagnosis and treatment.

Keywords:
Anaplastic large cell lymphomaBurkitt lymphomaChildrenDiffuse large B-cell lymphomaLymphoblastic lymphomaLymphomaNon-Hodgkin lymphoma

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Area of Science:

  • Pediatric oncology
  • Medical imaging
  • Hematology

Background:

  • Non-Hodgkin lymphoma (NHL) is a significant pediatric malignancy, comprising almost half of childhood lymphomas.
  • Pediatric NHL presents with a narrow histologic spectrum, characterized by aggressive subtypes and frequently widespread disease at diagnosis.
  • Common pediatric NHL subtypes include Burkitt lymphoma, lymphoblastic lymphoma, diffuse large B-cell lymphoma, and anaplastic large cell lymphoma.

Purpose of the Study:

  • To summarize the characteristics of pediatric non-Hodgkin lymphoma (NHL).
  • To highlight the current reliance on FDG-PET/CT for staging and response assessment in pediatric NHL.
  • To address the need for alternative, less ionizing imaging modalities in pediatric patients.

Main Methods:

  • Review of current literature on pediatric non-Hodgkin lymphoma (NHL).
  • Analysis of common NHL subtypes and their presentation in children.
  • Discussion of the role and limitations of FDG-PET/CT in pediatric oncology.

Main Results:

  • Pediatric NHL predominantly consists of aggressive subtypes with a propensity for extranodal involvement and widespread disease.
  • FDG-PET/CT is the standard for staging and assessing treatment response in pediatric NHL.
  • Concerns exist regarding cumulative radiation exposure from repeated FDG-PET/CT scans in young patients.

Conclusions:

  • Pediatric non-Hodgkin lymphoma (NHL) requires careful staging and monitoring.
  • The susceptibility of children to radiation necessitates the investigation of alternative imaging techniques.
  • Developing safer imaging protocols is crucial for improving outcomes in pediatric NHL patients.