**Question:** Most common Tumor of spleen is -

A. Angiosarcoma
B. Hodgkin's lymphoma
C. Lymphoma
D. Hemangioma

**Core Concept:**
The spleen is a crucial organ in the immune system, filtering blood and producing immune cells. It also stores red blood cells and acts as a reservoir for platelets. Tumors in the spleen can be classified into benign (non-cancerous) and malignant (cancerous) lesions. Common types of spleen tumors include angiosarcoma, lymphoma, and hemangioma.

**Why the Correct Answer is Right:**
Angiosarcoma is a rare malignant tumor originating from vascular endothelial cells. It represents around 1% of all splenic malignancies. The high mitotic rate and vascular invasion are distinctive features of angiosarcoma, making it the correct answer in this context.

**Why Each Wrong Option is Incorrect:**
Hodgkin's lymphoma (B) is a type of non-Hodgkin's lymphoma (NHL) affecting the lymphatic system. Although it can involve the spleen, it is less common compared to angiosarcoma.

Lymphoma (C) is a group of cancers originating from lymphocytes. While it can affect the spleen, it is less specific to the spleen as compared to angiosarcoma.

Hemangioma (D) is a benign tumor arising from vascular endothelial cells. Unlike angiosarcoma, hemangioma is a non-cancerous tumor and is less likely to be the most common splenic tumor.

**Correct Answer:** Angiosarcoma

**Clinical Pearl:**
Understanding the various types of splenic tumors is crucial for accurate diagnosis and appropriate treatment planning. Angiosarcoma is the most common malignant tumor of the spleen, while Hodgkin's lymphoma, lymphoma, and hemangioma are less common entities.