Shortening fraction of >= % by echocardiogram OR ejection fraction of >= % by multi-gated acquisition (MUGA) Cardiac ejection fraction >= % (for HER+ patients) as assessed by echocardiogram, multi gated acquisition scan (MUGA) scan, or cardiac magnetic resonance imaging (MRI) Patients with a cardiac ejection fraction (as measured by either Multi Gated Acquisition [MUGA] or echocardiogram [EKG]) < % Baseline ejection fraction ? % as assessed by echocardiogram or multi-gated acquisition (MUGA) scan. Ejection fraction < % obtained by either multi gated acquisition scan (MUGA) or echocardiogram Normal cardiac ejection fraction (> %) by multi gated acquisition scan (MUGA) or echocardiogram Adequate cardiac function defined as an ejection fraction of >= % by multi gated acquisition scan (MUGA) scan or echocardiogram and a corrected QT (QTc) interval of =< ms for men and =< ms for women Patients with a cardiac ejection fraction (as measured by either multi-gated acquisition [MUGA] or echocardiogram) < % A cardiac evaluation with an electrocardiogram showing no ischemic changes or abnormal rhythm and an ejection fraction of >= % established by multi-gated acquisition scan (MUGA) or echocardiogram Ejection fraction of >= % by echocardiogram or multi-gated acquisition (MUGA) scan A cardiac evaluation with an electrocardiogram showing no ischemic changes or abnormal rhythm and an ejection fraction of % established by multi-gated acquisition scan (MUGA) or echocardiogram Ejection fraction > % by either multi-gated acquisition scan (MUGA) scan or echocardiogram Ejection fraction (EF) >= % on multi gated acquisition (MUGA) scan or echocardiogram Patients with a cardiac ejection fraction (as measured by either multi-gated acquisition [MUGA] scan or echocardiogram) < %; (Note: patients who have had prior anthracycline exposure of > mg/m^ may be eligible after discussion with the principal investigator [PI]) For children with neuroblastoma (NBL): normal ejection fraction (> %) documented by echocardiogram or radionuclide multi-gated acquisition (MUGA) evaluation OR normal fractional shortening (> %) documented by echocardiogram; for subjects with paraganglioma/ pheochromocytoma: no clinically significant cardiac dysfunction Cardiac ejection fraction of >= % by echocardiogram or multi gated acquisition scan (MUGA) Ejection fraction measured by echocardiogram or multi gated acquisition scan (MUGA) > % (evaluation within weeks of screening does not need to be repeated) Normal cardiac function as defined by a normal ejection fraction by multi gated acquisition scan (MUGA) or echocardiogram Cardiac ejection fraction of >= % by echocardiogram or multi gated acquisition scan (MUGA) Cardiac ejection fraction >= % by multiple gate acquisition (MUGA) scan and/or by echocardiogram Cardiac dysfunction documented by an ejection fraction less than the lower limit of the facility normal by multi-gated acquisition (MUGA) scan, or less than % by echocardiogram Shortening fraction > % by echocardiogram or ejection fraction above the institutional lower limit of normal by multi gated acquisition scan (MUGA) Multi gated acquisition scan (MUGA) > % injection fraction Cardiac function:\r\n* Normal ejection fraction (>= %) documented by either echocardiogram or radionuclide multi gated acquisition scan (MUGA) evaluation; OR \r\n* Normal fractional shortening (>= %) documented by echocardiogram Echocardiogram or multi gated acquisition (MUGA) scan demonstrating an ejection fraction >= % Ejection fraction measured by echocardiogram or multi gated acquisition scan (MUGA) > % Adequate cardiac function as defined by either of the following: \r\n* An echocardiogram demonstrating an ejection fraction within normal limits\r\n* A multi gated acquisition (MUGA) scan demonstrating an ejection fraction within normal limits Patients must have a cardiac ejection fraction > % on two-dimensional (D) echocardiography or multi gated acquisition scan (MUGA) obtained within days of study enrollment Has a shortening fraction of >% or an ejection fraction of ?% by echocardiogram or multi-gated acquisition scan Subjects with multi gated acquisition scan (MUGA) < % ejection fraction (EF) Ejection fraction >= % by radionuclide angiogram (multi gated acquisition scan [MUGA]); Note: the echocardiogram (or MUGA) may be done within days prior to enrollment Baseline ejection fraction >= % by multi gated acquisition scan (MUGA) scan or echocardiogram performed =< days prior to registration Intraventricular septal (IVS) thickness =< mm (as determined by -dimensional [D] echocardiography or cardiac magnetic resonance imaging [MRI]) (ejection fraction may also be assessed by a multi-gated acquisition [MUGA]) Cardiac ejection fraction >= % by echocardiography (transthoracic echocardiography) or multi gated acquisition scan (MUGA) scan Patients must have a multi gated acquisition scan (MUGA) or echocardiogram within days prior to starting treatment and the ejection fraction must be >= % Ejection fraction < %, as determined by echocardiogram or multi gated acquisition scan (MUGA) Cardiac ejection fraction >= % as measured by echocardiogram of multiple gated acquisition scan (MUGA) scan Ejection fraction (EF) > % by multi gated acquisition scan (MUGA) Cardiac ejection fraction >= % by multi-gated acquisition (MUGA) scan and/or by echocardiogram Patients with a cardiac ejection fraction (as measured by either multi gated acquisition scan [MUGA] or echocardiogram) less than % Ejection fraction by multi gated acquisition scan (MUGA) scan or echocardiogram >= lower limit of institutional normal Patients with prior anthracycline exposure must have a baseline multi gated acquisition scan (MUGA) or echocardiogram prior to study entry Normal cardiac function (ejection fraction >= lower limit of normal) as determined by multi-gated acquisition scan (MUGA) or echocardiogram Echocardiogram or multi gated acquisition (MUGA) scan with ejection fraction within normal institution limits within days of registration Meeting institutional criteria for allo-HCT; ejection fraction by echocardiogram or multi-gated acquisition scan (MUGA) > %, pulmonary function test with adjusted diffusion capacity of the lung for carbon monoxide (DLCO) >= % Ejection fraction measured by echocardiogram or multi gated acquisition scan (MUGA) > % A cardiac evaluation with an electrocardiogram showing no ischemic changes or abnormal rhythm and an ejection fraction of % established by multi gated acquisition scan (MUGA) or echocardiogram Subjects with major cardiac illness multi-gated acquisition scan (MUGA) < % ejection fraction (EF) Estimated cardiac ejection fraction >= % by echocardiogram or multi gated acquisition scan (MUGA)