Publications by authors named "Dennis Drehner"

Unlabelled: Neuroblastoma is the most common extracranial tumor, accounting for 15% of all childhood cancer-related deaths. The long-term survival of patients with high-risk tumors is less than 40%, and MYCN amplification is one of the most common indicators of poor outcomes. Zika virus (ZIKV) is a mosquito-borne flavivirus associated with mild constitutional symptoms outside the fetal period.

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Rhabdomyosarcoma is a highly aggressive cancer that is generally considered a disease of childhood. A vast majority of cases occur in those below the age of 20. Rhabdomyosarcoma can occur in any soft tissue in the body but is primarily found in the head, neck, orbit, genitourinary tract, genitals, and extremities.

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Mastocytosis is a rare infiltrative disorder characterized by mast cell proliferation within the skin and various extra-cutaneous organ systems. We report the case of a full-term neonate admitted to the neonatal intensive care unit for evaluation of diffuse skin lesions on her face, trunk and extremities. Initially, the lesions appeared to be consistent with a blueberry muffin rash.

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Mature teratomas located solely in the posterior fossa are rare. We describe a girl who presented with hydrocephalus caused by a posterior fossa tumor that was ultimately diagnosed as a mature teratoma following complete extirpation. Unusual imaging characteristics which produced confusion preoperatively were, however, very consistent with mature teratomas that are encountered in the gonads.

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Objective: To demonstrate a case series of granulocytic sarcoma of the head and neck found in the pediatric population and review long-term outcomes.

Methods: A pathology database at a tertiary hospital was searched for patients with biopsy specimens from the head and neck diagnosed as granulocytic sarcoma.

Results: There were 6 cases between 1992 and 2004 that met inclusion criteria.

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Background: Primary amebic meningoencephalitis (PAM), caused by the free-living ameba Naegleria fowleri, has historically been associated with warm freshwater exposures at lower latitudes of the United States. In August 2010, a Minnesota resident, aged 7 years, died of rapidly progressive meningoencephalitis after local freshwater exposures, with no history of travel outside the state. PAM was suspected on the basis of amebae observed in cerebrospinal fluid.

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Objectives: To report the pathologic findings in cases involving endotracheal and endobronchial tumors in the pediatric population and to describe the presenting symptoms and treatment modalities for endotracheal and endobronchial tumors.

Design: Retrospective chart review.

Setting: Tertiary care children's hospital.

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