A 3-year-old child is admitted to the pediatric oncology unit with a suspected neuroblastoma. Which assessment finding would be most characteristic of this condition?
The nurse is conducting an initial assessment of a toddler with suspected neuroblastoma.
1Petechiae and bruising on the extremities
2Enlarged lymph nodes in the neck and axilla
3Bone pain and limping when walking
4Abdominal mass with hypertension✓ 정답
해설
Neuroblastoma commonly presents with an abdominal mass and hypertension due to catecholamine release from the tumor.
Neuroblastoma is the most common extracranial solid tumor in children, primarily occurring in children under 5 years of age. This malignant tumor originates from neural crest cells, most commonly arising in the adrenal medulla or sympathetic ganglia along the spine.
The most characteristic symptom of neuroblastoma is an abdominal mass, which appears in about 65% of cases when the tumor originates in the adrenal gland. This mass is usually firm, irregular, and may cross the midline. Hypertension is another characteristic sign, occurring in about 25% of patients, caused by excessive production of catecholamines (epinephrine and norepinephrine) by the tumor cells.
Other important clinical symptoms include "dancing eyes, dancing feet" syndrome (opsoclonus-myoclonus) in about 2-3% of patients, and Horner syndrome may occur when the tumor invades the cervical sympathetic ganglia. Additionally, failure to thrive, irritability, and bone pain may be present if metastasis has occurred.
Diagnosis is confirmed through imaging studies (CT, MRI, MIBG scan), elevated urinary catecholamines (VMA, HVA), and tissue biopsy. Prognosis varies greatly depending on age at diagnosis, stage, and biological factors, with infants generally showing better outcomes than older children.
Neuroblastoma can progress rapidly and tends to metastasize to bone, bone marrow, liver, and lymph nodes, making early recognition of these characteristic signs and prompt initiation of diagnosis and treatment critically important.
Neuroblastoma is a tumor arising from primitive neural crest cells of the sympathetic nervous system. As the most common extracranial solid tumor in childhood, it is characterized by significant clinical heterogeneity, ranging from spontaneous regression to highly aggressive, treatment-resistant disease [3]. The tumor's origin in the adrenal medulla or sympathetic ganglia explains its classic presentation and associated paraneoplastic syndromes.
Why Option 3 is the Most Characteristic Finding
A firm, non-tender abdominal mass represents the most common palpable presentation of neuroblastoma, as the primary tumor frequently originates in the adrenal gland or paraspinal ganglia within the abdomen. The mass is typically fixed, lobulated, and crosses the midline, distinguishing it from other pediatric abdominal masses such as Wilms tumor.
The concurrent hypertension is a critical and characteristic associated finding. Neuroblastoma cells can secrete catecholamines (epinephrine, norepinephrine) and their metabolites. While clinically significant catecholamine secretion is considered less common than in pheochromocytoma, it does occur and can lead to life-threatening hemodynamic instability, as evidenced by case reports of fatal cardiovascular collapse during anesthesia in undiagnosed catecholamine-secreting neuroblastoma [2]. The elevated catecholamines cause vasoconstriction and increased systemic vascular resistance, resulting in hypertension. This biochemical activity is the basis for diagnostic urinary biomarkers: elevated levels of homovanillic acid (HVA) and vanillylmandelic acid (VMA), which are catecholamine metabolites [1]. The presence of an abdominal mass coupled with hypertension in a young child should immediately raise suspicion for neuroblastoma.
Analysis of Incorrect Options
Option 1: Petechiae and bruising on the extremities
These findings are characteristic of bone marrow infiltration or suppression, most classically associated with leukemia. While neuroblastoma can metastasize to bone marrow in advanced stages (stage 4 or 4S disease), causing thrombocytopenia and resulting in petechiae or bruising, this is not the most characteristic initial presentation. The primary hallmark remains the solid tumor mass itself, often with paraneoplastic features. In a toddler with suspected neuroblastoma, the finding of a palpable abdominal mass with hypertension is more direct and specific to the tumor's origin and secretory activity.
Option 2: Enlarged lymph nodes in the neck and axilla
Lymphadenopathy is a hallmark of lymphomas, such as Hodgkin or non-Hodgkin lymphoma. While neuroblastoma can spread to regional lymph nodes, presenting as a palpable mass, diffuse cervical and axillary lymph node enlargement is not the typical initial finding. Neuroblastoma lymphatic spread usually involves regional nodes adjacent to the primary tumor. Primary cervical neuroblastoma is possible but far less common than an abdominal primary. Therefore, generalized lymphadenopathy points more strongly toward a lymphoproliferative disorder.
Option 4: Bone pain and pathological fractures
Bone pain is a common presenting symptom in neuroblastoma due to the tumor's propensity for cortical bone metastasis, which can indeed cause pain and pathological fractures. However, this presentation is more typical of older children with high-risk, widely metastatic disease. In a toddler, while possible, it is less specific than the classic abdominal mass with hypertension. Furthermore, bone pain and pathological fractures are also classic presenting features of primary bone tumors like Ewing sarcoma or osteosarcoma, as well as leukemia with bone infiltration. The combination of a palpable abdominal mass and hypertension is more uniquely indicative of neuroblastoma's pathophysiology.
Clinical Application and Diagnostic Reasoning
When a toddler presents with a suspected neuroblastoma, the nurse's assessment should focus on identifying the primary tumor site and signs of catecholamine excess. The abdominal mass is often discovered by a parent during bathing or by a clinician during a routine examination. The nurse should gently palpate the abdomen to assess the mass characteristics, noting its firm, fixed, and non-tender nature, while being cautious to avoid excessive manipulation due to the rare but real risk of catecholamine release [2]. Concurrently, accurate blood pressure measurement using an appropriately sized cuff is essential to detect hypertension. The combination of these two findings—a palpable abdominal mass and elevated blood pressure—provides a strong clinical picture that guides urgent diagnostic workup, including measurement of urinary HVA and VMA[1] and imaging studies to determine the tumor's origin and extent.
References (research sources)
[1]
Homovanillic acid and vanillylmandelic acid as neuroblastoma biomarkers in children.Research articleKavalakatt S, Ivica J. (2026) · DOI: 10.11613/bm.2026.020505
[2]
Unexpected fatal hemodynamic collapse during MRI anaesthesia in an 11-month-old infant with suspected neuroblastoma: a case report.Case reportBakkegaard P, Thyrrestrup PS, Jensen CF. (2026) · DOI: 10.1186/s12887-026-06826-2
[3]
Neuroblastoma in Childhood: Biological Insights, Risk Stratification, and Advances in Multimodal Therapy.Research articleDe Bona A, Barbieri M, Rinaldi N, Esposito S. (2026) · DOI: 10.3390/jcm15031101
Nursing Assessment for Suspected Neuroblastoma
Clinical Scenario
A 3-year-old child is admitted to the pediatric oncology unit with a suspected abdominal neuroblastoma. The nurse is performing the initial assessment.
Nursing Actions
Palpate the abdomen gently to assess for a firm, irregular, non-tender mass that may cross the midline. Avoid deep palpation if Wilms tumor has not been ruled out to prevent tumor rupture.
Measure blood pressure in all four extremities using an appropriately sized cuff. Compare readings to age-appropriate norms to detect hypertension caused by catecholamine secretion.
Assess for signs of catecholamine excess including tachycardia, flushing, diaphoresis, and irritability.
Obtain a thorough history focusing on constitutional symptoms such as weight loss, fever, and fatigue, as well as any reports of bone pain or limping that may indicate metastasis.
Collect a urine sample for catecholamine metabolites (HVA and VMA) as ordered, ensuring proper preservation and timely transport to the laboratory.
Clinical Pearls
Hypertension in a child with an abdominal mass is a red flag for neuroblastoma and differentiates it from other abdominal tumors like Wilms tumor, which rarely causes hypertension.
Neuroblastoma commonly metastasizes to bone, bone marrow, liver, and skin. Periorbital ecchymosis (raccoon eyes) is a classic sign of metastatic disease.
Do not confuse the abdominal mass of neuroblastoma with a Wilms tumor; neuroblastoma masses are often irregular and cross the midline, while Wilms tumor is typically smooth and unilateral.
Neuroblastoma — An extracranial solid tumor arising from primitive neural crest cells of the sympathetic nervous system, most common in children under 5.
Catecholamines — Vasoactive substances such as epinephrine and norepinephrine secreted by neuroblastoma cells, causing hypertension and serving as diagnostic markers.
Homovanillic Acid (HVA) — A urinary metabolite of dopamine, elevated levels of which are a key biomarker used in the diagnosis of neuroblastoma.
Vanillylmandelic Acid (VMA) — A urinary metabolite of norepinephrine and epinephrine, commonly elevated in patients with catecholamine-secreting tumors like neuroblastoma.