Cancer is not a single disease. There are many different types of cancer, and each one starts in a specific part of the body and behaves differently.

Understanding the different types of cancer helps patients and caregivers recognize symptoms early and seek the right medical care. This guide explains cancer types in simple, patient-friendly language, without medical complexity.

How Cancer Is Classified

Doctors classify cancer based on:

• Where it starts (organ or tissue)
• Type of cells involved
• How it grows and spreads
• Most cancers fall into two broad groups:
• Solid tumors
• Blood cancers

Solid Tumors and Blood Cancers

Solid Tumors

Solid tumors form a mass in an organ or tissue. Examples include:

• Breast cancer
• Lung cancer
• Colon cancer
• Brain tumors
• Blood Cancers

Blood Cancers

Blood cancers do not form solid lumps. They affect blood, bone marrow, or the lymphatic system.

Examples include:

• Leukemia
• Lymphoma
• Multiple myeloma

This distinction helps doctors choose the correct treatment.

Major Cancer Types Based on Where They Start

1. Carcinoma (Most Common Cancer Type)

Carcinomas begin in cells that line organs and body surfaces.

Common examples:

• Breast cancer
• Lung cancer
• Prostate cancer
• Colon cancer
• Cervical cancer

These are the most common types of cancer in adults.

2. Sarcoma

Sarcomas start in connective tissues such as:

• Bone
• Muscle
• Fat
• Blood vessels

Examples:

• Bone cancer
• Soft tissue sarcoma

Sarcomas are less common but can grow aggressively.

3. Leukemia (Cancer of the Blood)

Leukemia originates in the bone marrow and disrupts the normal formation of blood cells.

Common symptoms include:

• Frequent infections
• Fatigue
• Easy bruising
• Fever

Leukemia is a major blood cancer and does not form tumors.

4. Lymphoma (Cancer of the Lymphatic System)

Lymphoma affects lymph nodes and immune system cells.

Types include:

• Hodgkin lymphoma
• Non-Hodgkin lymphoma

Symptoms often include:

• Painless swollen lymph nodes
• Night sweats
• Unexplained weight loss

5. Multiple Myeloma

This cancer affects plasma cells in bone marrow.

It can cause:

• Bone pain
• Weakness
• Kidney problems
• Recurrent infections

Common Types of Cancer in Adults

The most frequently diagnosed cancers worldwide include:

These are considered major cancer types globally.

Cancers by Organ (Organ-Based Classification)

Cancers are often grouped by the organ where they start.

Examples include:

• Brain cancer
• Liver cancer
• Pancreatic cancer
• Kidney cancer
• Ovarian cancer
• Stomach cancer

This cancers by organ classification helps doctors decide screening and treatment plans.

Cancer Types and Symptoms: What Varies?

Different cancer types cause different symptoms.

However, some warning signs appear across many cancers:

• Unexplained weight loss
• Persistent fatigue
• Pain that doesn’t go away
• Unusual bleeding
• Lumps or swellings

Symptoms depend on the location, size, and stage of the cancer.

Why Knowing the Cancer Type Matters

Identifying the correct cancer type helps doctors:

• Choose the most effective treatment
• Avoid unnecessary therapies
• Predict disease behavior
• Improve survival outcomes

Why International Patients Choose India for Cancer Care

India offers advanced treatment options for all major cancer types, including:

• Solid tumors and blood cancers
• Organ-specific cancers
• Rare and complex cancers

How Karetrip Helps Cancer Patients

At karetrip.com we guide international patients through cancer care in India with transparency and compassion.

We help with:

• Identifying the right hospital and cancer specialist
• Coordinating diagnosis and treatment
• Arranging second medical opinions
• Medical visas, travel, and accommodation
• Local patient support throughout treatment

Our role is to make your cancer journey clear and manageable.