What does Pachymeningeal enhancement mean?
Pachymeningeal enhancement, also known as dura-arachnoid enhancement 4, refers to a dural and outer layer of arachnoid pattern of enhancement seen following contrast administration and may occur in the conditions listed below: infection. intracranial tumor.
What causes Pachymeningeal enhancement?
Extraaxial pachymeningeal enhancement may arise from various benign or malignant processes, including transient postoperative changes, intracranial hypotension, neoplasms such as meningiomas, metastatic disease (from breast and prostate cancer), secondary CNS lymphoma, and granulomatous disease.
What does meningeal enhancement mean on MRI?
Meningeal enhancement is a generic term related to the enhancement of the membranes that envelop the brain and spinal cord. Due the anatomical features, this enhancement can be divided in two subtypes: leptomeningeal enhancement (pial or pial-arachnoid enhancement)
What does thickening of the dura mean?
Localized or diffuse thickening of the dura mater may be seen in hypertrophic pachymeningitis that may be associated with rheumatoid arthritis, syphilis, Wegener’s granulomatosis, tuberculosis, and cancer [22–26].
What does enhancement mean on a CT scan?
Contrast enhancement is a ubiquitous term in radiology and can be used in three ways. Firstly, it may refer to any method of exaggerating the visible difference between adjacent structures on imaging by administering contrast media/agents. This includes differentiating between normal structures.
What does heterogeneous enhancement mean?
– Heterogeneous hepatic enhancement on arterial-phase has been described as an early sign of severe cholangitis (acute suppurative cholangitis). In these patients, an inflammatory process may dilate the periportal/peribiliary plexus and increase hepatic arterial blood flow.
What are Pachymeninges?
Pachymeninges: The dura. From pachy- (thick) + -meninges (membranes). The singular is pachymeninx.
What is pial enhancement?
The enhancement of the brain surface is known as pial or pial-arachnoid enhancement and often referred to as leptomeningeal enhancement 3.
What does homogeneous enhancement mean?
Homogeneous enhancement Homogeneous enhancement is uniform and confluent enhancement throughout the mass. The homogeneous enhancement often is suggestive of benign lesion. However, spatial resolution may limit observations on small foci.
What happens if meningioma is left untreated?
If you leave a meningioma untreated, it can grow as large as a grapefruit can cause persistent headaches, nausea, loss of neurological function, weakness and/or numbness and tingling on one side of the body, seizures, hearing or vision loss, balance problems, and muscle weakness.
What does Pachymeningitis mean?
Medical Definition of pachymeningitis : inflammation of the dura mater.
What does enhancement mean in radiology?