Topic overview

Start with the big picture

Hematological malignancies are cancers involving blood-forming or immune-system tissues. Laboratory investigation is an important part of their assessment, yet the source snapshot provides no test names, procedures, result patterns, or diagnostic criteria. Accordingly, this introduction stays at the topic level rather than presenting unsupported clinical detail. The full lesson is the place to explore the relevant laboratory tests and their role in evaluating these malignancies. Use the accompanying study materials to review the lesson’s content and check your understanding; interpretation of results should be grounded in appropriate clinical context and authoritative guidance.