Target lesion

Target Lesion is a term used in the field of medicine, specifically in radiology and dermatology, to describe a specific type of abnormality or lesion that has a particular appearance on imaging studies or on the skin.

Definition

A target lesion, also known as a bull's-eye lesion or iris lesion, is characterized by a central area of alteration, surrounded by a zone of different alteration, and then another outer ring of alteration. This gives the appearance of a target or bull's-eye.

In Radiology

In radiology, a target lesion is a term used to describe a specific appearance on imaging studies, such as CT scans, MRI, or Ultrasound. This appearance is typically indicative of certain types of tumors or inflammation.

In Dermatology

In dermatology, a target lesion refers to a type of skin lesion that has a particular appearance. It is characterized by a central dark area, surrounded by a paler ring, and then a darker outer ring. This type of lesion is typically associated with certain skin conditions, such as Erythema Multiforme.

Clinical Significance

The identification of a target lesion can be significant in the diagnosis and management of various medical conditions. In radiology, the presence of a target lesion may suggest a specific type of tumor or inflammatory condition. In dermatology, a target lesion is often indicative of a specific skin disease, such as Erythema Multiforme or Lyme Disease.

See Also

• Erythema Multiforme
• Lyme Disease
• Radiology
• Dermatology
• Computed Tomography
• Magnetic Resonance Imaging
• Ultrasound