Abnormal basophil morphology

What it means

Any structural abnormality or abnormal count of basophils.

Basophils are myeoloid granulocytes and part of the innate immune system. They represent the least abundant granulocyte population in mammals. They have a complex, almost C-shaped nucleus. Their granules stain blue with basic dye. They are not phagacytic. They are involved in the immune response to worms. Their cell surface has Fc receptors which may be attached to class E antibodies.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Abnormality of basophils