Histological classification plays a crucial role in the accurate diagnosis, prognosis, and treatment planning of cancer. This article serves as a comprehensive guide, providing insights into the significance of histological classification, different classification systems, and the key features used to categorize various types of cancer.

Cancers are categorized in two ways: by the type of tissue where the cancer originates (histological type), and by the primary site or location in the body where the cancer first grew. This section presents you with the first method: classification of cancer based on a histological form.

There are hundreds of different cancers from a histological perspective, which are divided into six major categories:

• Carcinoma
• Sarcoma
• Myeloma
• Leukemia
• Lymphoma
• Mixed Types