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What is The International Neuroblastoma Staging System (INSS) stage 4S includes metastasis to all the following except and explain in detail?
INSS stage 4S refers to neuroblastoma in children younger than 1 yr of age with dissemination to liver, skin, and/or bone marrow without bone involvement and with a primary tumor that would otherwise be staged as INSS stage 1 or 2. Reference: Nelson; Neuroblastoma; Page no: 2463