Andrew W. Walter, MD

Pediatric Hematologist

Nemours Children's Hospital, Delaware 1600 Rockland Road Wilmington, DE 19803

Fellowship

  • Pediatric Hematology/Oncology - University of Michigan, 1992

Internship

  • Pediatrics - The Children's Hospital of Philadelphia, 1987

Residency

  • Pediatrics - The Children's Hospital of Philadelphia, 1989

Education

  • M.S. - University of Rochester, 1986
  • M.D. - University of Rochester, 1986

Board Certifications

  • American Board of Pediatrics/Hematology-Oncology

  • Brain Tumors
  • Ependymoma
  • Low Grade Glioma
  • Malignant Glioma
  • Medulloblastoma
  • Neuro-Oncology
  • Neurofibromatosis
  • Rhabdomyosarcoma
  • Spinal Cord Tumors

  • Clinical Characteristics and Outcomes of Central Nervous System Tumors Harboring NTRK Gene Fusions; Clinical Cancer Research; (2025).

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  • The Rise of WNT-Activated Medulloblastoma?; Unknown Source; (2024).

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  • Mechanical properties of pediatric low-grade gliomas in children with and without neurofibromatosis type 1; Neuroradiology; (2024).

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  • WNT-activated, MYC-amplified medulloblastoma displaying intratumoural heterogeneity; Neuropathology and Applied Neurobiology; (2024).

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  • Clinical Outcomes and Complications of Pituitary Blastoma; Journal of Clinical Endocrinology and Metabolism; (2021).

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  • Clinical Outcomes and Patient-Matched Molecular Composition of Relapsed Medulloblastoma; Journal of Clinical Oncology; (2021).

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  • Clinical phenotypes and prognostic features of embryonal tumours with multi-layered rosettes: a Rare Brain Tumor Registry study; The Lancet Child and Adolescent Health; (2021).

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  • Surveillance for subsequent neoplasms of the CNS for childhood, adolescent, and young adult cancer survivors: a systematic review and recommendations from the International Late Effects of Childhood Cancer Guideline Harmonization Group; The Lancet Oncology; (2021).

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  • Clinical phenotypes and prognostic features of ETMRs (Embryonal Tumor with Multi-layered Rosettes) a new CNS tumor entity: A Rare Brain Tumor Registry study; medRxiv; (2020).

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  • Excellent outcome of young children with nodular desmoplastic medulloblastoma treated on "head Start" III: A multi-institutional, prospective clinical trial; Neuro-Oncology; (2020).

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  • Larotrectinib imaging response in low-grade glioma; Pediatric Blood and Cancer; (2020).

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  • Pleuropulmonary blastoma-like peritoneal sarcoma: a newly described malignancy associated with biallelic DICER1 pathogenic variation; Modern Pathology; (2020).

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  • Bone marrow transplant and pediatric multiple myeloma; Pediatric Blood and Cancer; (2019).

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  • Medulloblastoma and secondary acute myeloid leukemia in a patient with Turner syndrome; Pediatric Blood and Cancer; (2019).

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  • Constitutional LZTR1 mutation presenting with a unilateral vestibular schwannoma in a teenager; Clinical Genetics; (2017).

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  • Posterior reversible encephalopathy syndrome and cerebral sinus thrombosis in a case of pediatric B-Cell ALL; Journal of Pediatric Hematology/Oncology; (2017).

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  • Divergent clonal selection dominates medulloblastoma at recurrence; Nature; (2016).

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  • Hypothalamic glioma in a patient with Sturge-Weber syndrome; Journal of Pediatric Hematology/Oncology; (2016).

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  • Topical amphotericin B in combination with standard therapy for severe necrotizing skin and soft-tissue mucormycosis in an infant with bilineal leukemia: Case report and review; Journal of Pediatric Hematology/Oncology; (2014).

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  • Constitutional mismatch repair deficiency presenting in childhood as three simultaneous malignancies; Pediatric Blood and Cancer; (2013).

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  • Recurrence patterns across medulloblastoma subgroups: An integrated clinical and molecular analysis; The Lancet Oncology; (2013).

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  • Rituximab as potential therapy for paraneoplastic cerebellar degeneration in pediatric Hodgkin disease; Pediatric Blood and Cancer; (2012).

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  • Favorable outcome with conservative treatment for children with low grade brainstem tumors; Pediatric Blood and Cancer; (2012).

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  • Ehrlichia-induced hemophagocytic lymphohistiocytosis in two children; Pediatric Blood and Cancer; (2011).

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  • Infantile choriocarcinoma in a neonate with massive liver involvement cured with chemotherapy and liver transplant; Journal of Pediatric Hematology/Oncology; (2011).

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  • Regarding "intrathecal vincristine: 3 fatal cases and a review of the literature"; Journal of Pediatric Hematology/Oncology; (2010).

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  • Granulocyte colony stimulating factor in neonatal alloimmune neutropenia: A possible association with induced thrombocytopenia; Pediatric Blood and Cancer; (2010).

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  • Pancytopenia in hospitalized children: A five-year review; Journal of Pediatric Hematology/Oncology; (2010).

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  • Regarding "Intrathecal vincristine: 3 fatal cases and a review of the literature".; Journal of pediatric hematology/oncology : official journal of the American Society of Pediatric Hematology/Oncology; (2010).

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  • Natural progression of an unresected supratentorial ependymoma; Pediatric Neurosurgery; (2007).

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  • Central nervous system atypical teratoid/rhabdoid tumor: Results of therapy in children enrolled in a registry; Journal of Clinical Oncology; (2004).

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  • Brain tumors in children; Current Oncology Reports; (2004).

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  • Persistent questions about the treatment of severe aplastic anemia in children as illustrated by five cases; Hematology; (2003).

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  • Severe aplastic anemia associated with hepatitis and complicated by pulmonary aspergillosis: response to immune suppression and antifungal therapy.; Delaware medical journal; (2002).

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  • Changes in body mass index and prevalence of overweight in survivors of childhood acute lymphoblastic leukemia: Role of cranial irradiation; Medical and Pediatric Oncology; (2000).

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  • Long-term results with radiation therapy for pediatric desmoid tumors; International Journal of Radiation Oncology Biology Physics; (2000).

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  • Silent lacunar lesions detected by magnetic resonance imaging of children with brain tumors: A late sequela of therapy; Journal of Clinical Oncology; (2000).

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  • Tamoxifen and carboplatin for children with low-grade gliomas: A pilot study at st. jude children's research hospital; American Journal of Pediatric Hematology/Oncology; (2000).

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  • CNS involvement in children with newly diagnosed non-Hodgkin's lymphoma; Journal of Clinical Oncology; (2000).

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  • Comparison of CSF cytology and spinal magnetic resonance imaging in the detection of leptomeningeal disease in pediatric medulloblastoma or primitive neuroectodermal tumor; Journal of Clinical Oncology; (1999).

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  • Cyclophosphamide for the treatment of progressive low-grade astrocytoma: A Pediatric Oncology Group Phase II study; Journal of Pediatric Hematology/Oncology; (1999).

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  • Direct translation of a protracted irinotecan schedule from a xenograft model to a phase I trial in children; Journal of Clinical Oncology; (1999).

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  • High incidence of secondary brain tumours after radiotherapy and antimetabolites; Lancet; (1999).

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  • Survival and neurodevelopmental outcome of young children with medulloblastoma at St Jude Children's Research Hospital; Journal of Clinical Oncology; (1999).

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  • Comparison of lumbar and shunt cerebrospinal fluid specimens for cytologic detection of leptomeningeal disease in pediatric patients with brain tumors; Journal of Clinical Oncology; (1999).

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  • A pilot study of vincristine, ifosfamide, and doxorubicin in the treatment of pediatric non-rhabdomyosarcoma soft tissue sarcomas; Medical and Pediatric Oncology; (1998).

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  • Secondary brain tumors in children treated for acute lymphoblastic leukemia at St Jude Children's Research Hospital; Journal of Clinical Oncology; (1998).

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  • Bithalamic involvement predicts poor outcome among children with thalamic glial tumors; Pediatric Neurosurgery; (1998).

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  • Carboplatin and etoposide with hyperfractionated radiotherapy in children with newly diagnosed diffuse pontine gliomas: A phase I/II study; Medical and Pediatric Oncology; (1998).

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  • Patterns of failure in children with medulloblastoma: Effects of preirradiation chemotherapy; International Journal of Radiation Oncology Biology Physics; (1997).

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  • Complications of the nevoid basal cell carcinoma syndrome: A case report; Journal of Pediatric Hematology/Oncology; (1997).

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  • Letter to the editor: Errors involving pediatric patients receiving chemotherapy: A literature review [2] (multiple letters); Medical and Pediatric Oncology; (1997).

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  • Low-grade astrocytoma: A decade of experience at St. Jude Children's Research Hospital; Journal of Clinical Oncology; (1997).

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  • Post-irradiation malignant mesothelioma [6]; Cancer; (1997).

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  • Supratentorial malignant gliomas in childhood: A single institution perspective; Cancer; (1997).

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  • DNA index of glial tumors in children: Correlation with tumor grade and prognosis; Cancer; (1996).

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  • Gorlin syndrome associated with midline nasal dermoid cyst; Journal of Medical Genetics; (1996).

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  • Medulloblastoma with brain stem involvement: The impact of gross total resection on outcome; Pediatric Neurosurgery; (1996).

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  • Low-grade astrocytoma with neuraxis dissemination at diagnosis; Journal of Neurosurgery; (1995).

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  • Neurourologic consequences of accidental intrathecal vincristine: A case report; Medical and Pediatric Oncology; (1995).

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  • Preirradiation chemotherapy with carboplatin and etoposide in newly diagnosed embryonal pediatric CNS tumors; Journal of Clinical Oncology; (1995).

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  • Stereotactic injection of herpes simplex thymidine kinase vector producer cells (PA317-G1Tk1SvNa.7) and intravenous ganciclovir for the treatment of progressive or recurrent primary supratentorial pediatric malignant brain tumors; Human Gene Therapy; (1995).

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  • Final height after treatment for childhood acute lymphoblastic leukemia: Comparison of no cranial irradiation with 1800 and 2400 centigrays of cranial irradiation; The Journal of Pediatrics; (1993).

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  • Human hematopoietic stem cell adherence to cytokines and matrix molecules; Journal of Clinical Investigation; (1992).

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