Toxic granulation

Overview

Toxic granulation in a neutrophil.

Toxic granulation refers to the presence of large, dark granules in the cytoplasm of neutrophils, which are a type of white blood cell. These granules are more prominent than the normal granules found in neutrophils and are often associated with an increased production of these cells in response to infection or inflammation.

Causes

Toxic granulation is typically seen in conditions where there is a heightened immune response. Some common causes include:

• Bacterial infections
• Sepsis
• Inflammatory disorders such as rheumatoid arthritis
• Tissue necrosis
• Burns

Pathophysiology

The appearance of toxic granulation is due to the increased production and accelerated maturation of neutrophils in the bone marrow. During this process, the normal maturation of the granules is altered, leading to the retention of primary granules, which appear larger and darker under a microscope.

Clinical Significance

Toxic granulation is an important diagnostic feature in the evaluation of patients with suspected infections or inflammatory conditions. It is often seen in conjunction with other changes in neutrophils, such as Döhle bodies and cytoplasmic vacuolation.

Laboratory Diagnosis

Toxic granulation is typically identified through a peripheral blood smear examination. A trained hematologist or laboratory technician will examine the blood smear under a microscope to identify the characteristic granules in the neutrophils.

Related Pages

• Neutrophil
• White blood cell
• Infection
• Inflammation
• Sepsis