Pediatric Oncology Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
cytoreduction
The process of reducing the number of cancer cells in the body through treatment interventions.
induction therapy
The initial phase of cancer treatment designed to achieve complete remission by rapidly reducing tumor burden.
INRG
Global classification system for neuroblastoma risk stratification based on clinical and biological factors.
INSS
International Neuroblastoma Staging System, a classification system for neuroblastoma based on surgical findings.
intensification therapy
A treatment phase using high-dose chemotherapy to eliminate residual cancer cells after achieving initial remission.
intrathecal chemotherapy
Direct administration of anticancer drugs into the cerebrospinal fluid via lumbar puncture or Ommaya reservoir.
isotretinoin
Differentiation agent used in neuroblastoma maintenance therapy to promote tumor cell maturation.
JMML
Juvenile myelomonocytic leukemia, a rare myelodysplastic/myeloproliferative disorder specific to children.
Lansky score
A performance status scale specifically designed for children under 16 years, used to assess functional capability in pe...
late effects
Long-term complications and sequelae that develop months to years after completion of pediatric cancer treatment.
lymphoblast
An immature lymphoid cell that is the defining cell type in acute lymphoblastic leukemia.
MDS
Myelodysplastic syndrome, a group of bone marrow disorders that can occur as therapy-related complications in pediatric...
mediastinal bulk
Large mediastinal lymph node masses that require specific treatment considerations in pediatric lymphomas.
mediastinal mass
A tumor located in the central chest cavity, often presenting with respiratory symptoms and superior vena cava syndrome...
medulloepithelioma
A rare brain tumor arising from primitive medullary epithelium, primarily occurring in young children.
MIBG scan
Nuclear medicine imaging study using radiotracer to detect neuroblastoma and other neuroendocrine tumors.
minimal residual disease
Cancer cells that remain in the body after treatment but are undetectable by standard microscopic examination.
MKI
Histologic measure of cell division and death rates used in neuroblastoma prognostic assessment.
MRD
Minimal residual disease, the small number of cancer cells remaining after treatment that cannot be detected by standard...
mucositis
Inflammation and ulceration of mucous membranes, commonly occurring as a side effect of chemotherapy and radiation thera...
MYCN amplification
Genetic alteration involving multiple copies of the MYCN oncogene, associated with poor prognosis in neuroblastoma.
MYCN oncogene
A proto-oncogene whose amplification is a critical prognostic marker in neuroblastoma, associated with aggressive tumor...
neuroblastoma
A solid tumor arising from neural crest cells, most commonly occurring in infants and young children.
NSE
Serum biomarker elevated in neuroblastoma and other neuroendocrine tumors.
osteosarcoma
A primary bone cancer that predominantly affects children and adolescents, most commonly occurring in the metaphyses of...