Most common benign tumours during infancy is –
**Core Concept**
Benign tumors in infancy are often related to the development and growth of tissues. Hemangiomas, specifically, are a common type of benign tumor that arises from the vascular system.
**Why the Correct Answer is Right**
Hemangiomas are formed due to the abnormal proliferation of blood vessels, leading to an overgrowth of vascular tissue. They are most commonly found in the skin and subcutaneous tissue, but can also occur in the liver, gastrointestinal tract, and other organs. The exact cause is unknown, but it is believed to be related to an imbalance of angiogenic and anti-angiogenic factors. Hemangiomas typically appear within the first few weeks of life and can regress spontaneously over time, although some may require treatment.
**Why Each Wrong Option is Incorrect**
**Option A:** Neuroblastomas are malignant tumors that arise from the neural crest cells, not benign tumors. They are a type of cancer that primarily affects children.
**Option B:** Rhabdomyomas are benign tumors that occur in the heart muscle, but they are more commonly associated with adults and are not the most common benign tumor in infancy.
**Option C:** Lymphangiomas are benign tumors that arise from the lymphatic vessels, but they are less common than hemangiomas in infancy.
**Clinical Pearl / High-Yield Fact**
Hemangiomas are a common cause of infantile hemangioma, also known as "strawberry birthmarks." These lesions are typically pink, raised, and may bleed easily.
**Correct Answer: C. Hemangiomas**