Patient description: A 3-day-old Asian female infant presents with jaundice that started a day ago. She was born at 38w3d of gestation, after an uncomplicated pregnancy. The family history is unremarkable. The baby is breastfed. Vital signs are reported as: axillary temperature: 36.3°C, heart rate: 154 beats/min, respiratory rate: 37 breaths/min, and blood pressure: 65/33 mm Hg. Her weight is 3.2 kg, length is 53 cm, and head circumference 36 cm. Her sclera are yellow and her body is icteric. No murmurs or any other abnormalities are detected in the heart and lung auscultation. Her liver and spleen are normal on palpation. Laboratory results are as follows: Serum total bilirubin: 21.02 mg/dL Direct bilirubin of 2.04 mg/dL AST: 37 U/L ALT: 20 U/L GGT: 745 U/L Alkaline phosphatase: 531 U/L Creatinine: 0.3 mg/dL Urea: 29 mg/dL Na: 147 mEq/L K: 4.5 mEq/L CRP: 3 mg/L Complete blood cell count within the normal range. She is diagnosed with uncomplicated neonatal jaundice that may require phototherapy.

Clinical trial eligibility criteria: eligible ages (years): 0.0-49.0,  Adult Malignant Mesenchymoma Adult Rhabdomyosarcoma Childhood Alveolar Rhabdomyosarcoma Childhood Botryoid-Type Embryonal Rhabdomyosarcoma Childhood Embryonal Rhabdomyosarcoma Childhood Malignant Mesenchymoma Non-Metastatic Childhood Soft Tissue Sarcoma Stage I Adult Soft Tissue Sarcoma Stage II Adult Soft Tissue Sarcoma Stage III Adult Soft Tissue Sarcoma Untreated Childhood Rhabdomyosarcoma Patients with newly diagnosed embryonal RMS, botryoid or spindle cell variants of embryonal RMS, ectomesenchymoma, or alveolar RMS are eligible for this study Enrollment on COG-D9902 to confirm local histologic diagnosis with central pathology review is required for all patients Patients may be enrolled on ARST0531 and start protocol treatment prior to receipt of central pathology review results Patient must have Intermediate-risk RMS defined as Embryonal, botryoid, or spindle cell RMS, or ectomesenchymoma: stage 2 or 3 and group III OR Alveolar RMS: stage 1-3 and group I-III Staging ipsilateral retroperitoneal lymph node dissection (SIRLND) is required for all patients >= 10 years of age with paratesticular tumors and for patients < 10 years with clinically or radiographically involved lymph nodes (except when extensive lymph node involvement, defined as two or more lymph nodes > 2 cm in dimension, is identified by imaging studies) Regional lymph node sampling or sentinel lymph node procedure is required for histologic evaluation in patients with extremity tumors Clinically or radiographically enlarged nodes should be sampled for histologic evaluation Detection of metastasis by optional FDG PET (not required for study enrollment); FDG PET may detect abnormalities suggestive of metastasis not identified by bone scan, computed tomography (CT), or bone marrow aspiration/biopsy; the prognostic significance of FDG PET-detected abnormalities is not clear; FDG PET-detected abnormalities MUST be confirmed to be metastases by an additional imaging modality (such as magnetic resonance imaging [MRI] or CT) OR pathologic confirmation; unless FDG PET abnormalities are confirmed by another imaging modality or biopsy, FDG PET abnormalities will NOT be considered evidence of metastasis