ThemeTumor-type
specific Sessions

Session Title

Other raretumors

Presentation
No.

Abstract
No.

Lecture title

SpeakerCountry

RAR-P-02

RARE-52

RB1 gene deletions are the novel mechanism of choroid plexus tumors (CPT) oncogenesis

Alexander Druy

RussiaRAR-P-03

RARE-51

Molecular insights into malignant progression of choroid plexus papilloma (CPP)

Maxim Yankelevich

USA

RAR-P-04

RARE-31

Recurrent choroid plexus carcinoma in the setting of Li-Fraumeni syndrome: report of two children managed with intensive
re-induction and marrow-ablative consolidation chemotherapy without irradiation followed by molecularly-targeted biologicaltherapy

Margaret ShataraUSARAR-P-05

RARE-39

Molecularly confirmed atypical choroid plexus papilloma with intracranial dissemination

Masato Yanagi

JapanRAR-P-06

RARE-49

Choroid plexus adenoma without associated hydrocephalus presenting as precocious puberty

Kaylyn Utley

USA

RAR-P-07

RARE-27

Double mutations: Different germline and tumor mutations lead to poor outcomes

Molly HemenwayUSA

RAR-P-08

RARE-54

Molecular analysis of rosette-forming glioneuronal tumor at midbrain; report of two cases

Hajime HandaJapanRAR-P-09

RARE-23

RAR-O-10

RARE-17

RAR-O-11

RARE-21

Cancer spectrum in germline SUFU mutation carriers: a collaborative project of the SIOPE host genome working group

Léa Guerrini-Rousseau

FranceRAR-O-12

RARE-42

Primary intracranial sarcoma with DICER1-mutation - treatment results of a new molecular entity

Rosdali DiazPeru

RAR-P-14

RARE-57

Pediatric chordoma: whole exome sequencing of 11 pediatric chordoma samples

Katrina O’HalloranUSA

RAR-P-15

RARE-32

Pediatric metastatic skull base chordoma with TP53 mutation – a case report and review of the literature

Akira ShimadaJapanRAR-P-16

RARE-46

A thirteen year patient journey of infant giant clival chordoma: Case report and literature review

Eloise Neumann

UKRAR-P-17

RARE-58

Congenital metastatic chordoma of the clivus

Wieslawa Grajkowska

PolandRAR-P-18

RARE-35

Pineoblastoma in children six years of age or less: Final report of the Head Start I, II and III experience

Mohammad Abu-Arja

USA

RAR-P-19

RARE-24

Large congenital melanocytic nevi and neurocutaneous melanocytosis: A retrospective case series

Ugur SenerUSA

RAR-P-20

RARE-55Challenges and specific strategies for constitutional mismatch repair deficiency syndrome in low resource settings. Onbehalf of the International RRD Consortium in Low Resource Settings Panel

Eric Bouffet

CanadaRAR-P-21

RARE-19

Pediatric high grade glioma with DNA repair pathway aberrations, clinical characteristics and outcome

Muhammad BaigUSA

RAR-O-22

RARE-61

Body composition and Nuchal skinfold thickness in pediatric brain tumor patients

Hermann Müller

Germany

RAR-P-23

RARE-15

Early pseudoprogression post-radiation in paediatric high-grade glioma patients with constitutional mismatch repair
deficiency: two case reports from a single centre

Ay-Jiuan Teng

Australia

RAR-P-24

RARE-16

Seven cases of retinoblastoma with CNS involvements

Chikako Kiyotani

Japan

RAR-P-25

RARE-33

Giant cell tumor of the skull base with a history of a successful response to denosumab and later developing a second tumor Samvel Bardakhchyan

RAR-P-26

RARE-43

Favorable outcome of a young girl with recurrent metastatic pineoblastoma associated with a DICER1 mutation

Adam Rossi

USA

RAR-P-27

RARE-48

Characteristics and outcome of diffuse leptomeningeal glioneuronal tumor (DLGNT): a single institution experience

Emily Owens Pickle

USARAR-P-28

RARE-53

Pineal parenchymal tumor of intermediate differentiation (PPTID) and DICER1 syndrome: a case report

Stephanie Toll

USARAR-P-29

RARE-44

Clinical characterization and outcome; our experience of chordomas in pediatric and young adults

Amber Gibson

USA

RAR-P-30

RARE-50

Treatment response of CNS high-grade neuroepithelial tumors with MN1 alteration

Lorena Baroni

Argentina

RAR-P-31

RARE-13

Inflammatory myofibroblastic tumor mimicking Desmoplastic Infantile Ganglioglioma (DIG) of the temporal lobe

Mariko Sato

USARAR-P-32

RARE-14Development of anaplastic astrocytoma as a third malignancy in a pediatric patient with constitutional mismatch repair
deficiency (CMMRD): a case report and evaluation of tumor genomics identifying biallelic MSH6 mutations

Erin WrightUSA

RAR-P-33

RARE-38

Clinical presentation of MGA-NUTM1 fusion transcript sarcoma

Pongpak Pongphitcha

Thailand

RAR-P-34

RARE-40

Diana Osorio

USA

RAR-P-35

RARE-41

Nicholas Pytel

USA

RAR-P-36

RARE-20

Malignant peripheral nerve sheath tumor of a cranial nerve in an infant with neurocutaneous melanosis

Lacey CarterUSA

RAR-P-37

RARE-25

Retinal astrocytoma mTOR inhibitor therapy in tuberous sclerosis mosaicism

Naomi Evans

CanadaRAR-P-38

RARE-26

Retrospective analysis of pediatric choroid plexus tumors

Yoshiko Nakano

JapanElwira Szychot

UKValerie Cruz Flores

USA

Novel NF1 mutations in two occurrences of glioblastoma multiform in a patient with constitutional mismatch repair deficiency
Kaylyn Utley
syndrome
Survival benefit for individuals with Constitutional Mismatch Repair Deficiency Syndrome and brain tumors who undergo
Vanessa Bianchisurveillance protocol. A report from the International Replication Repair Consortium

Case report: Long-term survivor of a rare, pediatric primary histiocytic sarcoma (HS) of the central nervous system (CNS)
following complete resection, chemotherapy and allogeneic hematopoietic cell transplantation (Allo-HCT)
Second malignancies following treatment for primary central nervous system tumors in pediatric patients: a singleinstitutional retrospective review

UK Children’s Cancer and Leukaemia Group (CCLG): guidelines for the management of meningioma in children, teenagers
and young adults
Dysembryoplastic neuroepithelial tumors: a review of clinical and molecular characteristics, and outcome in a pediatricpopulation at a single centerUSACanadaArmenia

RAR-P-39

RARE-34

RAR-P-40

RARE-36

RAR-P-41

RARE-37

Noonan syndrome and glioneuronal tumors: a central nervous system cancer predisposition association?

Margaret ShataraUSA

RAR-P-42

RARE-45

Sarcomas involving the central nervous system at initial presentation in children and young adults: A case series

Yen-Lin Liu

TaiwanRAR-P-43

RARE-56

Peritoneal seeding of a diffuse leptomeningeal glioneuronal tumor in a childJulie Messiaen

Belgium

RAR-P-44

RARE-30

A rare case of primary Ewing’s Sarcoma of the cervical spine

Amandeep KalraUSARAR-P-45

RARE-47

Diffuse leptomeningeal disseminated glioneuronal tumor: case-series

Felipe Hada Sanders

BrazilRAR-P-46

RARE-29

Primary central nervous system non-Hodgkin lymphoma in an 11-year-old boy: A case report

Regina Navarro-Martin del Campo

Mexico