The most common malignant neoplasm of infancy is :

IGNOU PB. Bsc. Nsg. Entrance-2025

Child Health Nursing (Pediatrics)

Easy

Appeared in: IGNOU PB. Bsc. Nsg. Entrance-2025

Explanation

Neuroblastoma is the most frequently diagnosed malignancy in infants (children in the first year of life).
It is the most common extracranial solid tumor of childhood, accounting for 7-8% of all pediatric cancers.
This tumor arises from primordial neural crest cells that form the sympathetic nervous system, which is why it can appear anywhere along the sympathetic chain, most commonly in the adrenal medulla.
Approximately 40% of all neuroblastoma cases are diagnosed during infancy.

Option A: Wilms tumor, a cancer of the kidneys, is the most common renal malignancy in children, but its peak incidence occurs after infancy, typically between the ages of 2 and 3 years.
Option B: Hepatoblastoma is the most common primary malignant tumor of the liver in children, but its overall incidence in infancy is lower than that of neuroblastoma.
Option C: Leukopenia is not a type of cancer. It is a clinical finding that refers to a lower-than-normal number of white blood cells (leukocytes) in the blood, which can be caused by various conditions, including cancer and its treatment, but is not a malignancy itself.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Epidemiology of Pediatric Cancers as background academic context rather than a clinical decision trigger.
A nurse's understanding of age-specific cancer incidence is crucial for initial assessment and anticipating diagnostic pathways. When a nurse identifies an abdominal mass in an infant, neuroblastoma should be high on the list of suspected diagnoses.
Patient and family education is a key nursing role. Explaining the diagnostic process, which often includes urine catecholamine tests, imaging (CT/MRI), and MIBG scans, helps reduce anxiety and improve cooperation.
What if? If the child presenting with an abdominal mass was 3 years old instead of an infant, the nurse's primary suspicion would shift towards Wilms tumor, as its incidence peaks in the toddler years.

How to Approach the Question

First, identify the key terms in the question stem: 'most common', 'malignant neoplasm', and 'infancy'. The age group 'infancy' (birth to 1 year) is the most critical qualifier.
Next, evaluate each option. Recognize that 'Leukopenia' is a hematologic condition, not a cancer, and can be eliminated immediately.
You are left with three types of pediatric cancers: Wilms tumor, Hepatoblastoma, and Neuroblastoma.
Recall or deduce the epidemiology of these tumors. Think about which one is most characteristically associated with the first year of life.
Compare the relative incidence. Neuroblastoma is known as the most common solid tumor in infancy. While Wilms tumor and Hepatoblastoma also occur in young children, their peak incidences are either slightly later or they are less common overall than neuroblastoma in this specific age group.

Concept Tested & Keywords

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