**Question:** All of the following are true about neuroblastoma except?

A. Neuroblastoma is a rare childhood tumor that arises from the neural crest cells and is the most common extracranial solid tumor in infants.
B. Neuroblastoma commonly presents with symptoms due to local tumor effects, such as pain, mass effects, or compression of surrounding structures.
C. Neuroblastoma commonly presents with systemic symptoms due to the production of catecholamines, such as hypertension, tachycardia, and diaphoresis.
D. Neuroblastoma has a high rate of spontaneous regression, typically resolving on its own within a few months.

**Correct Answer: D. Neuroblastoma has a high rate of spontaneous regression, typically resolving on its own within a few months.**

**Core Concept:** Neuroblastoma is a malignant tumor derived from neural crest cells, most commonly affecting infants. It is the most common extracranial solid tumor in this age group. Neuroblastoma can present with local effects (pain, mass effects, compression), systemic effects (due to catecholamine production), or rarely both. While spontaneous regression does occur in some cases, it is not a typical feature of neuroblastoma and should not be relied upon.

**Why the Correct Answer is Right:** Neuroblastoma can spontaneously regress, but this is not a common feature. In fact, the majority of cases require aggressive treatment due to the potential for rapid progression and poor prognosis if left untreated. The statement "typically resolving on its own within a few months" is incorrect, as spontaneous regression is uncommon and not the expected course of the disease.

**Why Each Wrong Option is Incorrect:**

A. Although neuroblastoma presents with symptoms due to local tumor effects or systemic effects (catecholamine production), there is no mention of the tumor originating from neural crest cells, which is a crucial aspect of the disease.

B. While neuroblastoma can present with local effects, it is not solely responsible for presenting with symptoms due to systemic effects. The correct answer highlights the importance of catecholamine production in neuroblastoma presentation.

C. The statement "typically resolving on its own within a few months" is incorrect and contradicts our understanding of the disease course. Neuroblastoma frequently progresses rapidly, especially in infants, and treatment is usually required to improve prognosis.

**Clinical Pearl:**

Understanding the diverse presentation of neuroblastoma is essential for accurate diagnosis and management. While the tumor can cause symptoms due to local or systemic effects, spontaneous regression is a rare phenomenon and should not be the sole basis for diagnosis or treatment decision-making. Neuroblastoma typically requires intervention to achieve better outcomes, particularly in infants.