MedGen

ALK-related neuroblastic tumor susceptibility is characterized by increased risk for neuroblastic tumors including neuroblastoma, ganglioneuroblastoma, and ganglioneuroma. Neuroblastoma is a more malignant tumor and ganglioneuroma a more benign tumor. Depending on the histologic findings, ganglioneuroblastoma can behave in a more aggressive fashion, like neuroblastoma, or in a benign fashion, like ganglioneuroma. Preliminary data from the ten reported families with ALK-related neuroblastic tumor susceptibility suggest an overall penetrance of approximately 57% with the risk for neuroblastic tumor development highest in infancy and decreasing by late childhood. [from GeneReviews]

A primitive neuroectodermal tumor that originates from the cells of the embryonic medullary canal. [from HPO]

A benign or malignant neoplasm that occurs during childhood. [from NCI]

Nicolaides-Baraitser syndrome (NCBRS) is characterized by sparse scalp hair, prominence of the inter-phalangeal joints and distal phalanges due to decreased subcutaneous fat, characteristic coarse facial features, microcephaly, seizures, and developmental delay / intellectual disability. Seizures are of various types and can be difficult to manage. Developmental delay / intellectual disability (ID) is severe in nearly a half, moderate in a third, and mild in the remainder. Nearly a third never develop speech or language skills. [from GeneReviews]

Nijmegen breakage syndrome (NBS) is characterized by progressive microcephaly, early growth deficiency that improves with age, recurrent respiratory infections, an increased risk for malignancy (primarily lymphoma), and premature ovarian failure in females. Developmental milestones are attained at the usual time during the first year; however, borderline delays in development and hyperactivity may be observed in early childhood. Intellectual abilities tend to decline over time. Recurrent pneumonia and bronchitis may result in respiratory failure and early death. Other reported malignancies include solid tumors (e.g., medulloblastoma, glioma, rhabdomyosarcoma). [from GeneReviews]

Failure of a physiologic function or system. [from NCI]

A type of primary immune deficiency that is characterized by a more severe defect in both the T- and B-lymphocyte systems. [from HPO]

A highly malignant embryonal tumor of infancy and young childhood characterized by neuroectodermal elements organized in distinctive multilayered rosettes. Ependymoblastomas are large lesions that occur in the supratentorial compartment, typically displaying a physical connection to the ventricular system. [from HPO]

A primitive neuroectodermal neoplasm that occurs extracranially in soft tissue and bone. [from HPO]

A tumor that originates in cells from the primitive neural crest. This group of tumors is characteirzed by the presence of primitive cells with elements of neuronal and/or glial differentiation. [from HPO]

A neuroblastoma arising from the adrenal gland. [from NCI]