True about lymphangioma a) It is a malignant tumour b) It is a congenital sequestration of lymphatic c) Cystic hygroma is a lymphangioma d) Laser excision is done e) Sclerotherapy is commonly done

**Core Concept**
Lymphangioma is a **benign** tumor that arises from the **lymphatic vessels**. It is a type of vascular malformation that can occur in various parts of the body, including the skin, mucous membranes, and internal organs. Lymphangiomas are often present at birth or appear during early childhood.

**Why the Correct Answer is Right**
Lymphangioma is indeed a **congenital sequestration of lymphatic tissue**, which means it is a benign growth that forms from lymphatic vessels that have become isolated or sequestered from the rest of the lymphatic system. **Cystic hygroma** is a type of lymphangioma that typically occurs in the neck or armpits.

**Why Each Wrong Option is Incorrect**
**Option A:** Lymphangioma is not a **malignant tumor**, but rather a benign growth.
**Option D:** While **laser excision** may be used in some cases, it is not the primary treatment for lymphangioma.

**Why Each Wrong Option is Incorrect (continued)**
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**Clinical Pearl / High-Yield Fact**
A key point to remember is that **sclerotherapy** is a common treatment for lymphangiomas, especially for cystic hygromas. This involves injecting a sclerosing agent into the lymphangioma to reduce its size.

**Correct Answer:** **Correct Answer: b. It is a congenital sequestration of lymphatic**