A 12-year-old male adolescent, recently diagnosed with Hodgkin lymphoma, shows left cervical and supraclavicular lymph node involvement and drenching night sweats. Based on Ann Arbor Classification, the patient is classified as

A 12-year-old male adolescent, recently diagnosed with Hodgkin lymphoma, shows left cervical and supraclavicular lymph node involvement and drenching night sweats. Based on Ann Arbor Classification, the patient is classified as

A 3-day-old neonate has a large, soft, painless mass involving the head and neck region that mostly transilluminate; CT scan reveals a cystic mass involving the neck and intrathoracic mediastinum. The BEST modality for treatment of this neonate is

You are evaluating a 6-year-old child with ALL on interim maintenance phase who has frequent mucositis and myelosuppression that needs frequent discontinuation of his treatment. Of the following, the MOST valuable test for this child is

A 9mo-old infant develops a left adrenal mass; histological examination with genetic characteristics confirms neuroblastoma. Which of the following carries a better outcome?

The serum alpha-fetoprotein (AFP) level is elevated with some malignant germ cell tumors (GCTs) especially endodermal sinus tumors; it can be used as a measure of treatment response and during follow-up after completion of chemotherapy. However, it is normally elevated during infancy. At which age does AFP physiologically fall to normal adult level?