What is hypertrophic pachymeningitis?
Matthew Sanders
Score: 4.6/5 (46 votes)
Hypertrophic pachymeningitis is a rare form of diffuse inflammatory disease that causes thickening of the dura mater. It can involve the cranial or the spinal dura or both.
What causes hypertrophic Pachymeningitis?
Pachymeningitis is an inflammatory process of the dura-mater, which may lead to fibrous thickening. It can be caused by a variety of diseases, including sarcoidosis, tuberculosis and syphilis1.
Is Pachymeningitis curable?
Previous reports found a favorable response of IgG4-RP to steroids, suggesting that this disease is benign and treatable. However, the long-term treatment response and clinical course remain unknown.
What is Pachymeningitis?
Pachymeningitis is a rare illness which can be shown by magnetic resonance imaging (MRI) to be a thickening of the intracranial dura mater, when associated with an infectious, malignant, or rheumatic systematic disease.1–,6 “Idiopathic hypertrophic cranial pachymeningitis” is also noticeable, and is based on a process ...
Is Pachymeningitis fatal?
The lesion responded poorly to pulsed steroids or any immunosuppressants. The brainstem lesion grew rapidly and formed various nodules that ultimately resulted in brain death. This is the first fatal case of HP in a child.
Optic nerve decompression in a case of hypertrophic pachymeningitis due to Wegener's granulomatosis
How is Pachymeningitis treated?
The treatment consists of surgery (decompression and removal of as much meninges affected as possible) and drugs such as prednisone, azathioprine, cyclophosphamide and methotrexate (1, 2, 4). The scheme most commonly used is steroids (prednisone 1 mg / kg / day).
What causes thickening of the dura?
Pachymeningitis is an inflammatory process of the dura-mater, which may lead to fibrous thickening. It can be caused by a variety of diseases, including sarcoidosis, tuberculosis and syphilis1.
What is dura?
Dura: The outermost, toughest, and most fibrous of the three membranes (meninges) covering the brain and the spinal cord. Dura is short for dura mater (from the Latin for hard mother). ... Epidural means outside the dura. An accumulation of blood outside the dura is an epidural hematoma. Subdural means under the dura.
Is meningitis a systemic infection?
Meningitis is the most serious acute manifestation of systemic infection with H influenzae. (See Haemophilus Meningitis.) In the past, H influenzae was a major cause of meningitis, and the encapsulated type b strain of the organism (Hib) accounted for the majority of cases.
Which meninges are affected by meningitis?
Meningitis is an infection and inflammation of the fluid and three membranes (meninges) protecting your brain and spinal cord. The tough outer membrane is called the dura mater, and the delicate inner layer is the pia mater.
What's the dura mater?
(DER-uh MAY-ter) The tough outer layer of tissue that covers and protects the brain and spinal cord and is closest to the skull. The dura mater is one of the three layers that form the meninges.
What is thickening of the meninges?
Hypertrophic pachymeningitis is a rare form of diffuse inflammatory disease that causes thickening of the dura mater. It can involve the cranial or the spinal dura or both.
What is diffuse dural enhancement?
Diffuse Dural Enhancement (DDE) is a finding on MRI scan of the brain. There is a white "high signal" ring around the brain corresponding to the location of the dura. It is usually detected using gadolinium, but a FLAIR imaging can also be used. ( Tosaka et al, 2008)
What are the 3 types of meningitis?
The three types of meningitis are viral meningitis, fungal meningitis, and bacterial meningitis. The meninges are membranes that cover the brain and spinal cord. Meningitis occurs when these membranes become inflamed, potentially causing serious complications for the nervous system.
Why does meningitis happen?
Meningitis is an inflammation (swelling) of the protective membranes covering the brain and spinal cord. A bacterial or viral infection of the fluid surrounding the brain and spinal cord usually causes the swelling. However, injuries, cancer, certain drugs, and other types of infections also can cause meningitis.
How serious is meningitis?
Meningitis can be very serious if not treated quickly. It can cause life-threatening blood poisoning (septicaemia) and result in permanent damage to the brain or nerves. A number of vaccinations are available that offer some protection against meningitis.
What is dural pain?
The mechanism of dural pain is dual. The original concept was quite simple: a subluxated (but of itself painless) component of the disc impinges on the dura or the dural sleeves of the nerve roots. These pain-sensitive struc- tures translate the anatomical changes into back pain or root pain, respectively (Fig. 33.1).
What happens if the dura mater is damaged?
If your spine still has a dural tear, your spinal cord will leak this cerebrospinal fluid over time. This results in symptoms that include: Spinal Headache – Severe headache that may disappear when laying down. Spinal Meningitis – Sensitivity to light, fever, fatigue, headache, vomiting, and possibly seizures.
What is spinal dura?
The spinal dura mater is a fibrous, non-adherent, tough layer surrounding the spinal cord. It is separated from the wall of the vertebral canal by the epidural space. ... The subdural space separates the spinal dura mater from the arachnoid mater.
What does Dural based mean?
Dural based meningiomas over the convexity of the brain can be asymptomatic and incidentally discovered. These are often slow growing and do not require resection unless symptomatic. Presents as a mass lesion, with symptoms related to its location.
What does an enhancement on an MRI mean?
'Enhancement' refers to a process by which lesions revealed on a breast MRI image increases in contrast at a specific rate over a given short-time interval, which indicates increased vascularity to the area.
What is the dura mater made of?
It is the outermost layer of the three meninges that surround and protect the brain and spinal cord. The dura mater is made up of fibroblasts and large amounts of extracellular collagen. The dura mater is composed of two layers: the periosteal/endosteal layer and the meningeal layer.
What causes intracranial hypotension?
The condition is usually caused by the leakage of cerebrospinal fluid. A combination of an underlying weakness of the spinal meninges and a more or less trivial traumatic event, such as riding a roller coaster or jet skiing, is often found to cause spontaneous intracranial hypotension.
Does dura normally enhance?
For example, the skull and dura mater usually show vivid enhancement of the falx and tentorium on contrast-enhanced CT images, but they do not routinely demonstrate similar enhancement on MR images.
What is a non enhancing lesion?
The differences between enhancing and nonenhancing lesions in MRI are obvious. Normally with T1 contrast agents at a usual dosage, the enhancing lesions appear hyperintense on MR images and nonenhancing lesions appear isointense or without signal changes in comparison to that on precontrast MR images.
