Cancer classification is heavily reliant on morphological characteristics. For example:
Adenocarcinomas: These cancers arise from glandular cells and often show gland-like structures. Squamous Cell Carcinomas: These originate from squamous epithelium and display keratinization and intercellular bridges. Small Cell Lung Cancer: Characterized by small, round cells with scant cytoplasm and high nuclear-to-cytoplasmic ratios. Melanomas: These cancers, derived from melanocytes, often exhibit pigmented cells with prominent nuclei.