Ring-enhancing lesion

Ring-enhancing lesion

A Ring-enhancing lesion (pronunciation: /rɪŋ ɪnˈhænsɪŋ ˈliːʒən/) is a term used in radiology to describe a specific appearance of certain abnormalities or tumors on imaging studies.

Etymology

The term "ring-enhancing lesion" is derived from the characteristic appearance of these lesions on imaging studies. They appear as a ring of enhancement or increased signal intensity on certain types of imaging, particularly after the administration of contrast material.

Definition

A ring-enhancing lesion is defined as a lesion that shows a ring of enhancement on imaging studies, particularly on CT or MRI scans. This ring of enhancement is typically due to the presence of a rim of tissue that takes up the contrast material more than the center of the lesion.

Causes

Ring-enhancing lesions can be caused by a variety of conditions, including neoplasms, infections, inflammatory diseases, and demyelinating diseases. Some of the most common causes include brain abscesses, glioblastoma multiforme, metastatic cancer, and multiple sclerosis.

Diagnosis

The diagnosis of a ring-enhancing lesion is typically made based on the appearance of the lesion on imaging studies. However, the exact cause of the lesion often requires further investigation, including potentially a biopsy or other diagnostic tests.

Treatment

The treatment of a ring-enhancing lesion depends on the underlying cause. For example, if the lesion is due to an infection, antibiotics or other antimicrobial treatments may be used. If the lesion is due to a tumor, treatment may include surgery, radiation therapy, or chemotherapy.

Related Terms

• Abscess
• Glioblastoma multiforme
• Metastasis
• Multiple sclerosis

External links

• Medical encyclopedia article on Ring-enhancing lesion
• Wikipedia's article - Ring-enhancing lesion

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